| Message ID | 20200228210552.615672-14-seanga2@gmail.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | riscv: Add Sipeed Maix support | expand |
Hi Sean > The Fully-Programmable Input/Output Array (FPIOA) device controls pin > multiplexing on the K210. The FPIOA can remap any supported function to any > multifunctional IO pin. It can also perform basic GPIO functions, such as > reading the current value of a pin. > > Signed-off-by: Sean Anderson <seanga2 at gmail.com> > --- > > Changes in v5: > - New > > MAINTAINERS | 2 + > .../pinctrl/kendryte,k210-fpioa.txt | 116 +++ > drivers/pinctrl/Kconfig | 1 + > drivers/pinctrl/Makefile | 1 + > drivers/pinctrl/kendryte/Kconfig | 7 + > drivers/pinctrl/kendryte/Makefile | 1 + > drivers/pinctrl/kendryte/pinctrl.c | 663 ++++++++++++++++++ > drivers/pinctrl/kendryte/pinctrl.h | 325 +++++++++ > include/dt-bindings/pinctrl/k210-pinctrl.h | 12 + > 9 files changed, 1128 insertions(+) > create mode 100644 doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt > create mode 100644 drivers/pinctrl/kendryte/Kconfig > create mode 100644 drivers/pinctrl/kendryte/Makefile > create mode 100644 drivers/pinctrl/kendryte/pinctrl.c > create mode 100644 drivers/pinctrl/kendryte/pinctrl.h > create mode 100644 include/dt-bindings/pinctrl/k210-pinctrl.h > Please checkpatch and fix total: 3 errors, 13 warnings, 5 checks, 1147 lines checked Thanks Rick > diff --git a/MAINTAINERS b/MAINTAINERS > index 8e9e0569ba..8725bcf9af 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -809,7 +809,9 @@ RISC-V KENDRYTE > M: Sean Anderson <seanga2 at gmail.com> > S: Maintained > F: doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt > +F: doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt > F: drivers/clk/kendryte/ > +F: drivers/pinctrl/kendryte/ > F: include/kendryte/ > > RNG > diff --git a/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt b/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt > new file mode 100644 > index 0000000000..299ce65304 > --- /dev/null > +++ b/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt > @@ -0,0 +1,116 @@ > +Kendryte K210 FPIOA > + > +This binding describes the Fully-Programmable Input/Output Array found on > +Kendryte K210 SoCs. Any of the 256 functions can be mapped to any of the 48 > +pins. > + > +Required properties: > +- compatible: should be "kendryte,k210-fpioa" > +- reg: address and length of the FPIOA registers > +- kendryte,sysctl: phandle to the "sysctl" register map node > +- kendryte,power-offset: offset in the register map of the power bank control > + register (in bytes) > + > +Configuration nodes > + > +Pin configuration nodes are documented in pinctrl-bindings.txt > + > +Valid values for pins, groups, and function names: > + > +pins: > + "IO_X", where X is a number from 0 to 47. > + > +groups: > + A0, A1, A2, B0, B1, B2, C0, C1 > + > +functions: > + JTAG_TCLK, JTAG_TDI, JTAG_TMS, JTAG_TDO, SPI0_D0, SPI0_D1, SPI0_D2, > + SPI0_D3, SPI0_D4, SPI0_D5, SPI0_D6, SPI0_D7, SPI0_SS0, SPI0_SS1, > + SPI0_SS2, SPI0_SS3, SPI0_ARB, SPI0_SCLK, UARTHS_RX, UARTHS_TX, RESV6, > + RESV7, CLK_SPI1, CLK_I2C1, GPIOHS0, GPIOHS1, GPIOHS2, GPIOHS3, GPIOHS4, > + GPIOHS5, GPIOHS6, GPIOHS7, GPIOHS8, GPIOHS9, GPIOHS10, GPIOHS11, > + GPIOHS12, GPIOHS13, GPIOHS14, GPIOHS15, GPIOHS16, GPIOHS17, GPIOHS18, > + GPIOHS19, GPIOHS20, GPIOHS21, GPIOHS22, GPIOHS23, GPIOHS24, GPIOHS25, > + GPIOHS26, GPIOHS27, GPIOHS28, GPIOHS29, GPIOHS30, GPIOHS31, GPIO0, > + GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, UART1_RX, UART1_TX, > + UART2_RX, UART2_TX, UART3_RX, UART3_TX, SPI1_D0, SPI1_D1, SPI1_D2, > + SPI1_D3, SPI1_D4, SPI1_D5, SPI1_D6, SPI1_D7, SPI1_SS0, SPI1_SS1, > + SPI1_SS2, SPI1_SS3, SPI1_ARB, SPI1_SCLK, SPI2_D0, SPI2_SS, SPI2_SCLK, > + I2S0_MCLK, I2S0_SCLK, I2S0_WS, I2S0_IN_D0, I2S0_IN_D1, I2S0_IN_D2, > + I2S0_IN_D3, I2S0_OUT_D0, I2S0_OUT_D1, I2S0_OUT_D2, I2S0_OUT_D3, > + I2S1_MCLK, I2S1_SCLK, I2S1_WS, I2S1_IN_D0, I2S1_IN_D1, I2S1_IN_D2, > + I2S1_IN_D3, I2S1_OUT_D0, I2S1_OUT_D1, I2S1_OUT_D2, I2S1_OUT_D3, > + I2S2_MCLK, I2S2_SCLK, I2S2_WS, I2S2_IN_D0, I2S2_IN_D1, I2S2_IN_D2, > + I2S2_IN_D3, I2S2_OUT_D0, I2S2_OUT_D1, I2S2_OUT_D2, I2S2_OUT_D3, RESV0, > + RESV1, RESV2, RESV3, RESV4, RESV5, I2C0_SCLK, I2C0_SDA, I2C1_SCLK, > + I2C1_SDA, I2C2_SCLK, I2C2_SDA, DVP_XCLK, DVP_RST, DVP_PWDN, DVP_VSYNC, > + DVP_HREF, DVP_PCLK, DVP_D0, DVP_D1, DVP_D2, DVP_D3, DVP_D4, DVP_D5, > + DVP_D6, DVP_D7, SCCB_SCLK, SCCB_SDA, UART1_CTS, UART1_DSR, UART1_DCD, > + UART1_RI, UART1_SIR_IN, UART1_DTR, UART1_RTS, UART1_OUT2, UART1_OUT1, > + UART1_SIR_OUT, UART1_BAUD, UART1_RE, UART1_DE, UART1_RS485_EN, > + UART2_CTS, UART2_DSR, UART2_DCD, UART2_RI, UART2_SIR_IN, UART2_DTR, > + UART2_RTS, UART2_OUT2, UART2_OUT1, UART2_SIR_OUT, UART2_BAUD, UART2_RE, > + UART2_DE, UART2_RS485_EN, UART3_CTS, UART3_DSR, UART3_DCD, UART3_RI, > + UART3_SIR_IN, UART3_DTR, UART3_RTS, UART3_OUT2, UART3_OUT1, > + UART3_SIR_OUT, UART3_BAUD, UART3_RE, UART3_DE, UART3_RS485_EN, > + TIMER0_TOGGLE1, TIMER0_TOGGLE2, TIMER0_TOGGLE3, TIMER0_TOGGLE4, > + TIMER1_TOGGLE1, TIMER1_TOGGLE2, TIMER1_TOGGLE3, TIMER1_TOGGLE4, > + TIMER2_TOGGLE1, TIMER2_TOGGLE2, TIMER2_TOGGLE3, TIMER2_TOGGLE4, > + CLK_SPI2, CLK_I2C2, INTERNAL0, INTERNAL1, INTERNAL2, INTERNAL3, > + INTERNAL4, INTERNAL5, INTERNAL6, INTERNAL7, INTERNAL8, INTERNAL9, > + INTERNAL10, INTERNAL11, INTERNAL12, INTERNAL13, INTERNAL14, INTERNAL15, > + INTERNAL16, INTERNAL17, CONSTANT, INTERNAL18, DEBUG0, DEBUG1, DEBUG2, > + DEBUG3, DEBUG4, DEBUG5, DEBUG6, DEBUG7, DEBUG8, DEBUG9, DEBUG10, > + DEBUG11, DEBUG12, DEBUG13, DEBUG14, DEBUG15, DEBUG16, DEBUG17, DEBUG18, > + DEBUG19, DEBUG20, DEBUG21, DEBUG22, DEBUG23, DEBUG24, DEBUG25, DEBUG26, > + DEBUG27, DEBUG28, DEBUG29, DEBUG30, DEBUG31 > + > +Valid properties include: > + bias-disable, bias-pull-down, bias-pull-up, drive-strength, > + drive-strength-ua, input-enable, input-disable, input-schmitt-enable, > + input-schmitt-disable, power-source, output-low, output-high, > + output-enable, output-disable, slew-rate > + > +Notes on specific properties include: > +- bias-pull-up, -down, and -pin-default: The pull strength cannot be configured. > +- drive-strength: There are 8 drive strength settings between 11 and 50 mA > +- power-source: Controls the output voltage of a bank of pins. Either > + K210_PC_POWER_1V8 or K210_PC_POWER_3V3 may be specified. This property cannot > + be specified for individual pins. > +- slew-rate: Specifying this property reduces the slew rate > + > +Example: > +fpioa: pinmux at 502B0000 { > + compatible = "kendryte,k210-fpioa"; > + reg = <0x502B0000 0x100>; > + kendryte,sysctl = <&sysctl>; > + kendryte,power-offset = <K210_SYSCTL_POWER_SEL>; > + > + fpioa_jtag: jtag { > + voltage { > + group = "A0"; > + power-source = <K210_PC_POWER_3V3>; > + }; > + tck { > + function = "JTAG_TCLK"; > + pins = "IO_0"; > + }; > + tdi { > + function = "JTAG_TDI"; > + pins = "IO_1"; > + }; > + tms { > + function = "JTAG_TMS"; > + pins = "IO_2"; > + }; > + tdo { > + function = "JTAG_TDO"; > + pins = "IO_3"; > + }; > + }; > + > + fpioa_isp: isp { > + function = "GPIOHS0"; > + pins = "IO_16"; > + }; > +}; > diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig > index 83e39b9de3..9ec56c7735 100644 > --- a/drivers/pinctrl/Kconfig > +++ b/drivers/pinctrl/Kconfig > @@ -289,6 +289,7 @@ endif > source "drivers/pinctrl/broadcom/Kconfig" > source "drivers/pinctrl/exynos/Kconfig" > source "drivers/pinctrl/intel/Kconfig" > +source "drivers/pinctrl/kendryte/Kconfig" > source "drivers/pinctrl/mediatek/Kconfig" > source "drivers/pinctrl/meson/Kconfig" > source "drivers/pinctrl/mscc/Kconfig" > diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile > index 4f662c4f6d..1fe66fed3c 100644 > --- a/drivers/pinctrl/Makefile > +++ b/drivers/pinctrl/Makefile > @@ -17,6 +17,7 @@ obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o > obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/ > obj-$(CONFIG_PINCTRL_PIC32) += pinctrl_pic32.o > obj-$(CONFIG_PINCTRL_EXYNOS) += exynos/ > +obj-$(CONFIG_PINCTRL_K210) += kendryte/ > obj-$(CONFIG_PINCTRL_MESON) += meson/ > obj-$(CONFIG_PINCTRL_MTK) += mediatek/ > obj-$(CONFIG_PINCTRL_MSCC) += mscc/ > diff --git a/drivers/pinctrl/kendryte/Kconfig b/drivers/pinctrl/kendryte/Kconfig > new file mode 100644 > index 0000000000..6fc10e9516 > --- /dev/null > +++ b/drivers/pinctrl/kendryte/Kconfig > @@ -0,0 +1,7 @@ > +config PINCTRL_K210 > + bool "Kendryte K210 Fully-Programmable Input/Output Array driver" > + depends on DM && PINCTRL_GENERIC > + help > + Support pin multiplexing on the K210. The "FPIOA" can remap any > + supported function to any multifunctional IO pin. It can also perform > + basic GPIO functions, such as reading the current value of a pin. > diff --git a/drivers/pinctrl/kendryte/Makefile b/drivers/pinctrl/kendryte/Makefile > new file mode 100644 > index 0000000000..1c10d7a929 > --- /dev/null > +++ b/drivers/pinctrl/kendryte/Makefile > @@ -0,0 +1 @@ > +obj-y += pinctrl.o > diff --git a/drivers/pinctrl/kendryte/pinctrl.c b/drivers/pinctrl/kendryte/pinctrl.c > new file mode 100644 > index 0000000000..3f7de0e706 > --- /dev/null > +++ b/drivers/pinctrl/kendryte/pinctrl.c > @@ -0,0 +1,663 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> > + */ > + > +#include <common.h> > +#include <clk.h> > +#include <dm.h> > +#include <dm/pinctrl.h> > +#include <dt-bindings/pinctrl/k210-pinctrl.h> > +#include <mapmem.h> > +#include <regmap.h> > +#include <syscon.h> > +#include <asm/io.h> > +#include <linux/err.h> > +#include "pinctrl.h" > + > +struct k210_pc_priv { > + struct clk clk; > + struct k210_fpioa __iomem *fpioa; /* FPIOA register */ > + struct regmap *sysctl; /* Sysctl regmap */ > + u32 power_offset; /* Power bank register offset */ > +}; > + > +#define PIN(i) [i] = "IO_" #i > +static const char k210_pc_pin_names[][6] = { > + PIN(0), > + PIN(1), > + PIN(2), > + PIN(3), > + PIN(4), > + PIN(5), > + PIN(6), > + PIN(7), > + PIN(8), > + PIN(9), > + PIN(10), > + PIN(11), > + PIN(12), > + PIN(13), > + PIN(14), > + PIN(15), > + PIN(16), > + PIN(17), > + PIN(18), > + PIN(19), > + PIN(20), > + PIN(21), > + PIN(22), > + PIN(23), > + PIN(24), > + PIN(25), > + PIN(26), > + PIN(27), > + PIN(28), > + PIN(29), > + PIN(30), > + PIN(31), > + PIN(32), > + PIN(33), > + PIN(34), > + PIN(35), > + PIN(36), > + PIN(37), > + PIN(38), > + PIN(39), > + PIN(40), > + PIN(41), > + PIN(42), > + PIN(43), > + PIN(44), > + PIN(45), > + PIN(46), > + PIN(47), > +}; > +#undef PIN > + > +static int k210_pc_get_pins_count(struct udevice *dev) > +{ > + return ARRAY_SIZE(k210_pc_pin_names); > +}; > + > +static const char *k210_pc_get_pin_name(struct udevice *dev, unsigned selector) > +{ > + return k210_pc_pin_names[selector]; > +} > + > +/* These are just power domains */ > +static const char k210_pc_group_names[][3] = { > + [0] = "A0", > + [1] = "A1", > + [2] = "A2", > + [3] = "B0", > + [4] = "B1", > + [5] = "B2", > + [6] = "C0", > + [7] = "C1", > +}; > + > +static int k210_pc_get_groups_count(struct udevice *dev) > +{ > + return ARRAY_SIZE(k210_pc_group_names); > +} > + > +static const char *k210_pc_get_group_name(struct udevice *dev, > + unsigned selector) > +{ > + return k210_pc_group_names[selector]; > +} > + > +enum k210_pc_mode_id { > + K210_PC_DEFAULT_DISABLED, > + K210_PC_DEFAULT_IN, > + K210_PC_DEFAULT_IN_TIE, > + K210_PC_DEFAULT_OUT, > + K210_PC_DEFAULT_I2C, > + K210_PC_DEFAULT_SPI, > + K210_PC_DEFAULT_GPIO, > + K210_PC_DEFAULT_INT13, > +}; > + > +#define DEFAULT(mode) [K210_PC_DEFAULT_##mode] = K210_PC_MODE_##mode > +static const u32 k210_pc_mode_id_to_mode[] = { > + [K210_PC_DEFAULT_DISABLED] = 0, > + DEFAULT(IN), > + [K210_PC_DEFAULT_IN_TIE] = K210_PC_MODE_IN, > + DEFAULT(OUT), > + DEFAULT(I2C), > + DEFAULT(SPI), > + DEFAULT(GPIO), > + [K210_PC_DEFAULT_INT13] = K210_PC_MODE_IN | K210_PC_PU, > +}; > +#undef DEFAULT > + > +/* This saves around 2K vs having a pointer+mode */ > +struct k210_pcf_info { > + char name[15]; > + u8 mode_id; > +}; > + > +#define FUNC(id, mode) [K210_PCF_##id] = { \ > + .name = #id, \ > + .mode_id = K210_PC_DEFAULT_##mode \ > +} > +static const struct k210_pcf_info k210_pcf_infos[] = { > + FUNC(JTAG_TCLK, IN), > + FUNC(JTAG_TDI, IN), > + FUNC(JTAG_TMS, IN), > + FUNC(JTAG_TDO, OUT), > + FUNC(SPI0_D0, SPI), > + FUNC(SPI0_D1, SPI), > + FUNC(SPI0_D2, SPI), > + FUNC(SPI0_D3, SPI), > + FUNC(SPI0_D4, SPI), > + FUNC(SPI0_D5, SPI), > + FUNC(SPI0_D6, SPI), > + FUNC(SPI0_D7, SPI), > + FUNC(SPI0_SS0, OUT), > + FUNC(SPI0_SS1, OUT), > + FUNC(SPI0_SS2, OUT), > + FUNC(SPI0_SS3, OUT), > + FUNC(SPI0_ARB, IN_TIE), > + FUNC(SPI0_SCLK, OUT), > + FUNC(UARTHS_RX, IN), > + FUNC(UARTHS_TX, OUT), > + FUNC(RESV6, IN), > + FUNC(RESV7, IN), > + FUNC(CLK_SPI1, OUT), > + FUNC(CLK_I2C1, OUT), > + FUNC(GPIOHS0, GPIO), > + FUNC(GPIOHS1, GPIO), > + FUNC(GPIOHS2, GPIO), > + FUNC(GPIOHS3, GPIO), > + FUNC(GPIOHS4, GPIO), > + FUNC(GPIOHS5, GPIO), > + FUNC(GPIOHS6, GPIO), > + FUNC(GPIOHS7, GPIO), > + FUNC(GPIOHS8, GPIO), > + FUNC(GPIOHS9, GPIO), > + FUNC(GPIOHS10, GPIO), > + FUNC(GPIOHS11, GPIO), > + FUNC(GPIOHS12, GPIO), > + FUNC(GPIOHS13, GPIO), > + FUNC(GPIOHS14, GPIO), > + FUNC(GPIOHS15, GPIO), > + FUNC(GPIOHS16, GPIO), > + FUNC(GPIOHS17, GPIO), > + FUNC(GPIOHS18, GPIO), > + FUNC(GPIOHS19, GPIO), > + FUNC(GPIOHS20, GPIO), > + FUNC(GPIOHS21, GPIO), > + FUNC(GPIOHS22, GPIO), > + FUNC(GPIOHS23, GPIO), > + FUNC(GPIOHS24, GPIO), > + FUNC(GPIOHS25, GPIO), > + FUNC(GPIOHS26, GPIO), > + FUNC(GPIOHS27, GPIO), > + FUNC(GPIOHS28, GPIO), > + FUNC(GPIOHS29, GPIO), > + FUNC(GPIOHS30, GPIO), > + FUNC(GPIOHS31, GPIO), > + FUNC(GPIO0, GPIO), > + FUNC(GPIO1, GPIO), > + FUNC(GPIO2, GPIO), > + FUNC(GPIO3, GPIO), > + FUNC(GPIO4, GPIO), > + FUNC(GPIO5, GPIO), > + FUNC(GPIO6, GPIO), > + FUNC(GPIO7, GPIO), > + FUNC(UART1_RX, IN), > + FUNC(UART1_TX, OUT), > + FUNC(UART2_RX, IN), > + FUNC(UART2_TX, OUT), > + FUNC(UART3_RX, IN), > + FUNC(UART3_TX, OUT), > + FUNC(SPI1_D0, SPI), > + FUNC(SPI1_D1, SPI), > + FUNC(SPI1_D2, SPI), > + FUNC(SPI1_D3, SPI), > + FUNC(SPI1_D4, SPI), > + FUNC(SPI1_D5, SPI), > + FUNC(SPI1_D6, SPI), > + FUNC(SPI1_D7, SPI), > + FUNC(SPI1_SS0, OUT), > + FUNC(SPI1_SS1, OUT), > + FUNC(SPI1_SS2, OUT), > + FUNC(SPI1_SS3, OUT), > + FUNC(SPI1_ARB, IN_TIE), > + FUNC(SPI1_SCLK, OUT), > + FUNC(SPI2_D0, SPI), > + FUNC(SPI2_SS, IN), > + FUNC(SPI2_SCLK, IN), > + FUNC(I2S0_MCLK, OUT), > + FUNC(I2S0_SCLK, OUT), > + FUNC(I2S0_WS, OUT), > + FUNC(I2S0_IN_D0, IN), > + FUNC(I2S0_IN_D1, IN), > + FUNC(I2S0_IN_D2, IN), > + FUNC(I2S0_IN_D3, IN), > + FUNC(I2S0_OUT_D0, OUT), > + FUNC(I2S0_OUT_D1, OUT), > + FUNC(I2S0_OUT_D2, OUT), > + FUNC(I2S0_OUT_D3, OUT), > + FUNC(I2S1_MCLK, OUT), > + FUNC(I2S1_SCLK, OUT), > + FUNC(I2S1_WS, OUT), > + FUNC(I2S1_IN_D0, IN), > + FUNC(I2S1_IN_D1, IN), > + FUNC(I2S1_IN_D2, IN), > + FUNC(I2S1_IN_D3, IN), > + FUNC(I2S1_OUT_D0, OUT), > + FUNC(I2S1_OUT_D1, OUT), > + FUNC(I2S1_OUT_D2, OUT), > + FUNC(I2S1_OUT_D3, OUT), > + FUNC(I2S2_MCLK, OUT), > + FUNC(I2S2_SCLK, OUT), > + FUNC(I2S2_WS, OUT), > + FUNC(I2S2_IN_D0, IN), > + FUNC(I2S2_IN_D1, IN), > + FUNC(I2S2_IN_D2, IN), > + FUNC(I2S2_IN_D3, IN), > + FUNC(I2S2_OUT_D0, OUT), > + FUNC(I2S2_OUT_D1, OUT), > + FUNC(I2S2_OUT_D2, OUT), > + FUNC(I2S2_OUT_D3, OUT), > + FUNC(RESV0, DISABLED), > + FUNC(RESV1, DISABLED), > + FUNC(RESV2, DISABLED), > + FUNC(RESV3, DISABLED), > + FUNC(RESV4, DISABLED), > + FUNC(RESV5, DISABLED), > + FUNC(I2C0_SCLK, I2C), > + FUNC(I2C0_SDA, I2C), > + FUNC(I2C1_SCLK, I2C), > + FUNC(I2C1_SDA, I2C), > + FUNC(I2C2_SCLK, I2C), > + FUNC(I2C2_SDA, I2C), > + FUNC(DVP_XCLK, OUT), > + FUNC(DVP_RST, OUT), > + FUNC(DVP_PWDN, OUT), > + FUNC(DVP_VSYNC, IN), > + FUNC(DVP_HREF, IN), > + FUNC(DVP_PCLK, IN), > + FUNC(DVP_D0, IN), > + FUNC(DVP_D1, IN), > + FUNC(DVP_D2, IN), > + FUNC(DVP_D3, IN), > + FUNC(DVP_D4, IN), > + FUNC(DVP_D5, IN), > + FUNC(DVP_D6, IN), > + FUNC(DVP_D7, IN), > + FUNC(SCCB_SCLK, I2C), > + FUNC(SCCB_SDA, I2C), > + FUNC(UART1_CTS, IN), > + FUNC(UART1_DSR, IN), > + FUNC(UART1_DCD, IN), > + FUNC(UART1_RI, IN), > + FUNC(UART1_SIR_IN, IN), > + FUNC(UART1_DTR, OUT), > + FUNC(UART1_RTS, OUT), > + FUNC(UART1_OUT2, OUT), > + FUNC(UART1_OUT1, OUT), > + FUNC(UART1_SIR_OUT, OUT), > + FUNC(UART1_BAUD, OUT), > + FUNC(UART1_RE, OUT), > + FUNC(UART1_DE, OUT), > + FUNC(UART1_RS485_EN, OUT), > + FUNC(UART2_CTS, IN), > + FUNC(UART2_DSR, IN), > + FUNC(UART2_DCD, IN), > + FUNC(UART2_RI, IN), > + FUNC(UART2_SIR_IN, IN), > + FUNC(UART2_DTR, OUT), > + FUNC(UART2_RTS, OUT), > + FUNC(UART2_OUT2, OUT), > + FUNC(UART2_OUT1, OUT), > + FUNC(UART2_SIR_OUT, OUT), > + FUNC(UART2_BAUD, OUT), > + FUNC(UART2_RE, OUT), > + FUNC(UART2_DE, OUT), > + FUNC(UART2_RS485_EN, OUT), > + FUNC(UART3_CTS, IN), > + FUNC(UART3_DSR, IN), > + FUNC(UART3_DCD, IN), > + FUNC(UART3_RI, IN), > + FUNC(UART3_SIR_IN, IN), > + FUNC(UART3_DTR, OUT), > + FUNC(UART3_RTS, OUT), > + FUNC(UART3_OUT2, OUT), > + FUNC(UART3_OUT1, OUT), > + FUNC(UART3_SIR_OUT, OUT), > + FUNC(UART3_BAUD, OUT), > + FUNC(UART3_RE, OUT), > + FUNC(UART3_DE, OUT), > + FUNC(UART3_RS485_EN, OUT), > + FUNC(TIMER0_TOGGLE1, OUT), > + FUNC(TIMER0_TOGGLE2, OUT), > + FUNC(TIMER0_TOGGLE3, OUT), > + FUNC(TIMER0_TOGGLE4, OUT), > + FUNC(TIMER1_TOGGLE1, OUT), > + FUNC(TIMER1_TOGGLE2, OUT), > + FUNC(TIMER1_TOGGLE3, OUT), > + FUNC(TIMER1_TOGGLE4, OUT), > + FUNC(TIMER2_TOGGLE1, OUT), > + FUNC(TIMER2_TOGGLE2, OUT), > + FUNC(TIMER2_TOGGLE3, OUT), > + FUNC(TIMER2_TOGGLE4, OUT), > + FUNC(CLK_SPI2, OUT), > + FUNC(CLK_I2C2, OUT), > + FUNC(INTERNAL0, OUT), > + FUNC(INTERNAL1, OUT), > + FUNC(INTERNAL2, OUT), > + FUNC(INTERNAL3, OUT), > + FUNC(INTERNAL4, OUT), > + FUNC(INTERNAL5, OUT), > + FUNC(INTERNAL6, OUT), > + FUNC(INTERNAL7, OUT), > + FUNC(INTERNAL8, OUT), > + FUNC(INTERNAL9, IN), > + FUNC(INTERNAL10, IN), > + FUNC(INTERNAL11, IN), > + FUNC(INTERNAL12, IN), > + FUNC(INTERNAL13, INT13), > + FUNC(INTERNAL14, I2C), > + FUNC(INTERNAL15, IN), > + FUNC(INTERNAL16, IN), > + FUNC(INTERNAL17, IN), > + FUNC(CONSTANT, DISABLED), > + FUNC(INTERNAL18, IN), > + FUNC(DEBUG0, OUT), > + FUNC(DEBUG1, OUT), > + FUNC(DEBUG2, OUT), > + FUNC(DEBUG3, OUT), > + FUNC(DEBUG4, OUT), > + FUNC(DEBUG5, OUT), > + FUNC(DEBUG6, OUT), > + FUNC(DEBUG7, OUT), > + FUNC(DEBUG8, OUT), > + FUNC(DEBUG9, OUT), > + FUNC(DEBUG10, OUT), > + FUNC(DEBUG11, OUT), > + FUNC(DEBUG12, OUT), > + FUNC(DEBUG13, OUT), > + FUNC(DEBUG14, OUT), > + FUNC(DEBUG15, OUT), > + FUNC(DEBUG16, OUT), > + FUNC(DEBUG17, OUT), > + FUNC(DEBUG18, OUT), > + FUNC(DEBUG19, OUT), > + FUNC(DEBUG20, OUT), > + FUNC(DEBUG21, OUT), > + FUNC(DEBUG22, OUT), > + FUNC(DEBUG23, OUT), > + FUNC(DEBUG24, OUT), > + FUNC(DEBUG25, OUT), > + FUNC(DEBUG26, OUT), > + FUNC(DEBUG27, OUT), > + FUNC(DEBUG28, OUT), > + FUNC(DEBUG29, OUT), > + FUNC(DEBUG30, OUT), > + FUNC(DEBUG31, OUT), > +}; > +#undef FUNC > + > +int k210_pc_get_functions_count(struct udevice *dev) > +{ > + return ARRAY_SIZE(k210_pcf_infos); > +} > + > +static const char *k210_pc_get_function_name(struct udevice *dev, > + unsigned selector) > +{ > + return k210_pcf_infos[selector].name; > +} > + > +static int k210_pc_pinmux_set(struct udevice *dev, unsigned pin_selector, > + unsigned func_selector) > +{ > + struct k210_pc_priv *priv = dev_get_priv(dev); > + const struct k210_pcf_info *info = &k210_pcf_infos[func_selector]; > + u32 mode = k210_pc_mode_id_to_mode[info->mode_id]; > + u32 val = func_selector | mode; > + > + log_debug("setting pin %s to %s with mode %.8x\n", > + k210_pc_pin_names[pin_selector], info->name, mode); > + writel(val, &priv->fpioa->pins[pin_selector]); > + return 0; > +} > + > +/* Max drive strength in uA */ > +static const int k210_pc_drive_strength[] = { > + [0] = 11200, > + [1] = 16800, > + [2] = 22300, > + [3] = 27800, > + [4] = 33300, > + [5] = 38700, > + [6] = 44100, > + [7] = 49500, > +}; > + > +static int k210_pc_get_drive(unsigned max_strength_ua) > +{ > + int i; > + > + for (i = K210_PC_DRIVE_MAX; i; i--) > + if (k210_pc_drive_strength[i] < max_strength_ua) > + return i; > + > + return -EINVAL; > +} > + > +static int k210_pc_pinconf_set(struct udevice *dev, unsigned pin_selector, > + unsigned param, unsigned argument) > +{ > + struct k210_pc_priv *priv = dev_get_priv(dev); > + u32 val = readl(&priv->fpioa->pins[pin_selector]); > + > + switch (param) { > + case PIN_CONFIG_BIAS_DISABLE: > + val &= ~K210_PC_BIAS_MASK; > + break; > + case PIN_CONFIG_BIAS_PULL_DOWN: > + if (argument) > + val |= K210_PC_PD; > + else > + return -EINVAL; > + break; > + case PIN_CONFIG_BIAS_PULL_UP: > + if (argument) > + val |= K210_PC_PD; > + else > + return -EINVAL; > + break; > + case PIN_CONFIG_DRIVE_STRENGTH: > + argument *= 1000; > + case PIN_CONFIG_DRIVE_STRENGTH_UA: { > + int drive = k210_pc_get_drive(argument); > + > + if (IS_ERR_VALUE(drive)) > + return drive; > + val &= ~K210_PC_DRIVE_MASK; > + val |= FIELD_PREP(K210_PC_DRIVE_MASK, drive); > + break; > + } > + case PIN_CONFIG_INPUT_ENABLE: > + if (argument) > + val |= K210_PC_IE; > + else > + val &= ~K210_PC_IE; > + break; > + case PIN_CONFIG_INPUT_SCHMITT: > + argument = 1; > + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: > + if (argument) > + val |= K210_PC_ST; > + else > + val &= ~K210_PC_ST; > + break; > + case PIN_CONFIG_OUTPUT: > + k210_pc_pinmux_set(dev, pin_selector, K210_PCF_CONSTANT); > + val = readl(&priv->fpioa->pins[pin_selector]); > + val |= K210_PC_MODE_OUT; > + > + if (!argument) > + val |= K210_PC_DO_INV; > + break; > + case PIN_CONFIG_OUTPUT_ENABLE: > + if (argument) > + val |= K210_PC_OE; > + else > + val &= ~K210_PC_OE; > + break; > + case PIN_CONFIG_SLEW_RATE: > + if (argument) > + val |= K210_PC_SL; > + else > + val &= ~K210_PC_SL; > + break; > + default: > + return -EINVAL; > + } > + > + writel(val, &priv->fpioa->pins[pin_selector]); > + return 0; > +} > + > +static int k210_pc_pinconf_group_set(struct udevice *dev, > + unsigned group_selector, unsigned param, > + unsigned argument) > +{ > + struct k210_pc_priv *priv = dev_get_priv(dev); > + > + if (param == PIN_CONFIG_POWER_SOURCE) { > + u32 bit = BIT(group_selector); > + > + regmap_update_bits(priv->sysctl, priv->power_offset, bit, > + argument ? bit : 0); > + } else { > + int i, ret; > + > + for (i = 0; i < 6; i++) { > + ret = k210_pc_pinconf_set(dev, group_selector * 6 + i, > + param, argument); > + if (ret) > + return ret; > + } > + } > + > + return 0; > +} > + > +static int k210_pc_get_pin_muxing(struct udevice *dev, unsigned int selector, > + char *buf, int size) > +{ > + struct k210_pc_priv *priv = dev_get_priv(dev); > + u32 val = readl(&priv->fpioa->pins[selector]); > + const struct k210_pcf_info *info = &k210_pcf_infos[val & K210_PCF_MASK]; > + > + strncpy(buf, info->name, min((size_t)size, sizeof(info->name))); > + return 0; > +} > + > +static const struct pinconf_param k210_pc_pinconf_params[] = { > + { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, > + { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 }, > + { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, > + { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, U32_MAX }, > + { "drive-strength-ua", PIN_CONFIG_DRIVE_STRENGTH_UA, U32_MAX }, > + { "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 }, > + { "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 }, > + { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 }, > + { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 }, > + { "power-source", PIN_CONFIG_POWER_SOURCE, K210_PC_POWER_1V8 }, > + { "output-low", PIN_CONFIG_OUTPUT, 0 }, > + { "output-high", PIN_CONFIG_OUTPUT, 1 }, > + { "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 }, > + { "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 }, > + { "slew-rate", PIN_CONFIG_SLEW_RATE, 1 }, > +}; > + > +static const struct pinctrl_ops k210_pc_pinctrl_ops = { > + .get_pins_count = k210_pc_get_pins_count, > + .get_pin_name = k210_pc_get_pin_name, > + .get_groups_count = k210_pc_get_groups_count, > + .get_group_name = k210_pc_get_group_name, > + .get_functions_count = k210_pc_get_functions_count, > + .get_function_name = k210_pc_get_function_name, > + .pinmux_set = k210_pc_pinmux_set, > + .pinconf_num_params = ARRAY_SIZE(k210_pc_pinconf_params), > + .pinconf_params = k210_pc_pinconf_params, > + .pinconf_set = k210_pc_pinconf_set, > + .pinconf_group_set = k210_pc_pinconf_group_set, > + .set_state = pinctrl_generic_set_state, > + .get_pin_muxing = k210_pc_get_pin_muxing, > +}; > + > +static int k210_pc_probe(struct udevice *dev) > +{ > + int ret, i, j; > + struct k210_pc_priv *priv = dev_get_priv(dev); > + > + priv->fpioa = dev_read_addr_ptr(dev); > + if (!priv->fpioa) > + return -EINVAL; > + > + ret = clk_get_by_index(dev, 0, &priv->clk); > + if (ret) > + return ret; > + > + ret = clk_enable(&priv->clk); > + if (ret && ret != -ENOSYS && ret != -ENOTSUPP) > + goto err; > + > + priv->sysctl = syscon_regmap_lookup_by_phandle(dev, "kendryte,sysctl"); > + if (IS_ERR(priv->sysctl)) { > + ret = -ENODEV; > + goto err; > + } > + > + ret = dev_read_u32(dev, "kendryte,power-offset", &priv->power_offset); > + if (ret) > + goto err; > + > + log_debug("fpioa = %p sysctl = %p power offset = %x\n", priv->fpioa, > + (void *)priv->sysctl->ranges[0].start, priv->power_offset); > + > + /* Disable all pins */ > + for (i = 6; i < ARRAY_SIZE(k210_pc_pin_names); i++) > + k210_pc_pinmux_set(dev, i, K210_PCF_CONSTANT); > + > + /* Init input ties */ > + for (i = 0; i < ARRAY_SIZE(priv->fpioa->tie_en); i++) { > + u32 val = 0; > + > + for (j = 0; j < 32; j++) > + if (k210_pcf_infos[i * 32 + j].mode_id == > + K210_PC_DEFAULT_IN_TIE) > + val |= BIT(j); > + writel(val, &priv->fpioa->tie_en[i]); > + writel(val, &priv->fpioa->tie_val[i]); > + } > + > + return 0; > + > +err: > + clk_free(&priv->clk); > + return ret; > +} > + > +static const struct udevice_id k210_pc_ids[] = { > + { .compatible = "kendryte,k210-fpioa" }, > + { } > +}; > + > +U_BOOT_DRIVER(pinctrl_k210) = { > + .name = "pinctrl_k210", > + .id = UCLASS_PINCTRL, > + .of_match = k210_pc_ids, > + .probe = k210_pc_probe, > + .priv_auto_alloc_size = sizeof(struct k210_pc_priv), > + .ops = &k210_pc_pinctrl_ops, > +}; > diff --git a/drivers/pinctrl/kendryte/pinctrl.h b/drivers/pinctrl/kendryte/pinctrl.h > new file mode 100644 > index 0000000000..de434700c3 > --- /dev/null > +++ b/drivers/pinctrl/kendryte/pinctrl.h > @@ -0,0 +1,325 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* > + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> > + */ > + > +#ifndef K210_PINCTRL_H > +#define K210_PINCTRL_H > + > +#include <linux/bitfield.h> > + > +/* > + * Full list of PinCtrl Functions from > + * kendryte-standalone-sdk/lib/drivers/include/fpioa.h > + */ > +#define K210_PCF_SHIFT 0 > +#define K210_PCF_MASK GENMASK(7, 0) > +#define K210_PCF_JTAG_TCLK 0 /* JTAG Test Clock */ > +#define K210_PCF_JTAG_TDI 1 /* JTAG Test Data In */ > +#define K210_PCF_JTAG_TMS 2 /* JTAG Test Mode Select */ > +#define K210_PCF_JTAG_TDO 3 /* JTAG Test Data Out */ > +#define K210_PCF_SPI0_D0 4 /* SPI0 Data 0 */ > +#define K210_PCF_SPI0_D1 5 /* SPI0 Data 1 */ > +#define K210_PCF_SPI0_D2 6 /* SPI0 Data 2 */ > +#define K210_PCF_SPI0_D3 7 /* SPI0 Data 3 */ > +#define K210_PCF_SPI0_D4 8 /* SPI0 Data 4 */ > +#define K210_PCF_SPI0_D5 9 /* SPI0 Data 5 */ > +#define K210_PCF_SPI0_D6 10 /* SPI0 Data 6 */ > +#define K210_PCF_SPI0_D7 11 /* SPI0 Data 7 */ > +#define K210_PCF_SPI0_SS0 12 /* SPI0 Chip Select 0 */ > +#define K210_PCF_SPI0_SS1 13 /* SPI0 Chip Select 1 */ > +#define K210_PCF_SPI0_SS2 14 /* SPI0 Chip Select 2 */ > +#define K210_PCF_SPI0_SS3 15 /* SPI0 Chip Select 3 */ > +#define K210_PCF_SPI0_ARB 16 /* SPI0 Arbitration */ > +#define K210_PCF_SPI0_SCLK 17 /* SPI0 Serial Clock */ > +#define K210_PCF_UARTHS_RX 18 /* UART High speed Receiver */ > +#define K210_PCF_UARTHS_TX 19 /* UART High speed Transmitter */ > +#define K210_PCF_RESV6 20 /* Reserved function */ > +#define K210_PCF_RESV7 21 /* Reserved function */ > +#define K210_PCF_CLK_SPI1 22 /* Clock SPI1 */ > +#define K210_PCF_CLK_I2C1 23 /* Clock I2C1 */ > +#define K210_PCF_GPIOHS0 24 /* GPIO High speed 0 */ > +#define K210_PCF_GPIOHS1 25 /* GPIO High speed 1 */ > +#define K210_PCF_GPIOHS2 26 /* GPIO High speed 2 */ > +#define K210_PCF_GPIOHS3 27 /* GPIO High speed 3 */ > +#define K210_PCF_GPIOHS4 28 /* GPIO High speed 4 */ > +#define K210_PCF_GPIOHS5 29 /* GPIO High speed 5 */ > +#define K210_PCF_GPIOHS6 30 /* GPIO High speed 6 */ > +#define K210_PCF_GPIOHS7 31 /* GPIO High speed 7 */ > +#define K210_PCF_GPIOHS8 32 /* GPIO High speed 8 */ > +#define K210_PCF_GPIOHS9 33 /* GPIO High speed 9 */ > +#define K210_PCF_GPIOHS10 34 /* GPIO High speed 10 */ > +#define K210_PCF_GPIOHS11 35 /* GPIO High speed 11 */ > +#define K210_PCF_GPIOHS12 36 /* GPIO High speed 12 */ > +#define K210_PCF_GPIOHS13 37 /* GPIO High speed 13 */ > +#define K210_PCF_GPIOHS14 38 /* GPIO High speed 14 */ > +#define K210_PCF_GPIOHS15 39 /* GPIO High speed 15 */ > +#define K210_PCF_GPIOHS16 40 /* GPIO High speed 16 */ > +#define K210_PCF_GPIOHS17 41 /* GPIO High speed 17 */ > +#define K210_PCF_GPIOHS18 42 /* GPIO High speed 18 */ > +#define K210_PCF_GPIOHS19 43 /* GPIO High speed 19 */ > +#define K210_PCF_GPIOHS20 44 /* GPIO High speed 20 */ > +#define K210_PCF_GPIOHS21 45 /* GPIO High speed 21 */ > +#define K210_PCF_GPIOHS22 46 /* GPIO High speed 22 */ > +#define K210_PCF_GPIOHS23 47 /* GPIO High speed 23 */ > +#define K210_PCF_GPIOHS24 48 /* GPIO High speed 24 */ > +#define K210_PCF_GPIOHS25 49 /* GPIO High speed 25 */ > +#define K210_PCF_GPIOHS26 50 /* GPIO High speed 26 */ > +#define K210_PCF_GPIOHS27 51 /* GPIO High speed 27 */ > +#define K210_PCF_GPIOHS28 52 /* GPIO High speed 28 */ > +#define K210_PCF_GPIOHS29 53 /* GPIO High speed 29 */ > +#define K210_PCF_GPIOHS30 54 /* GPIO High speed 30 */ > +#define K210_PCF_GPIOHS31 55 /* GPIO High speed 31 */ > +#define K210_PCF_GPIO0 56 /* GPIO pin 0 */ > +#define K210_PCF_GPIO1 57 /* GPIO pin 1 */ > +#define K210_PCF_GPIO2 58 /* GPIO pin 2 */ > +#define K210_PCF_GPIO3 59 /* GPIO pin 3 */ > +#define K210_PCF_GPIO4 60 /* GPIO pin 4 */ > +#define K210_PCF_GPIO5 61 /* GPIO pin 5 */ > +#define K210_PCF_GPIO6 62 /* GPIO pin 6 */ > +#define K210_PCF_GPIO7 63 /* GPIO pin 7 */ > +#define K210_PCF_UART1_RX 64 /* UART1 Receiver */ > +#define K210_PCF_UART1_TX 65 /* UART1 Transmitter */ > +#define K210_PCF_UART2_RX 66 /* UART2 Receiver */ > +#define K210_PCF_UART2_TX 67 /* UART2 Transmitter */ > +#define K210_PCF_UART3_RX 68 /* UART3 Receiver */ > +#define K210_PCF_UART3_TX 69 /* UART3 Transmitter */ > +#define K210_PCF_SPI1_D0 70 /* SPI1 Data 0 */ > +#define K210_PCF_SPI1_D1 71 /* SPI1 Data 1 */ > +#define K210_PCF_SPI1_D2 72 /* SPI1 Data 2 */ > +#define K210_PCF_SPI1_D3 73 /* SPI1 Data 3 */ > +#define K210_PCF_SPI1_D4 74 /* SPI1 Data 4 */ > +#define K210_PCF_SPI1_D5 75 /* SPI1 Data 5 */ > +#define K210_PCF_SPI1_D6 76 /* SPI1 Data 6 */ > +#define K210_PCF_SPI1_D7 77 /* SPI1 Data 7 */ > +#define K210_PCF_SPI1_SS0 78 /* SPI1 Chip Select 0 */ > +#define K210_PCF_SPI1_SS1 79 /* SPI1 Chip Select 1 */ > +#define K210_PCF_SPI1_SS2 80 /* SPI1 Chip Select 2 */ > +#define K210_PCF_SPI1_SS3 81 /* SPI1 Chip Select 3 */ > +#define K210_PCF_SPI1_ARB 82 /* SPI1 Arbitration */ > +#define K210_PCF_SPI1_SCLK 83 /* SPI1 Serial Clock */ > +#define K210_PCF_SPI2_D0 84 /* SPI2 Data 0 */ > +#define K210_PCF_SPI2_SS 85 /* SPI2 Select */ > +#define K210_PCF_SPI2_SCLK 86 /* SPI2 Serial Clock */ > +#define K210_PCF_I2S0_MCLK 87 /* I2S0 Master Clock */ > +#define K210_PCF_I2S0_SCLK 88 /* I2S0 Serial Clock(BCLK) */ > +#define K210_PCF_I2S0_WS 89 /* I2S0 Word Select(LRCLK) */ > +#define K210_PCF_I2S0_IN_D0 90 /* I2S0 Serial Data Input 0 */ > +#define K210_PCF_I2S0_IN_D1 91 /* I2S0 Serial Data Input 1 */ > +#define K210_PCF_I2S0_IN_D2 92 /* I2S0 Serial Data Input 2 */ > +#define K210_PCF_I2S0_IN_D3 93 /* I2S0 Serial Data Input 3 */ > +#define K210_PCF_I2S0_OUT_D0 94 /* I2S0 Serial Data Output 0 */ > +#define K210_PCF_I2S0_OUT_D1 95 /* I2S0 Serial Data Output 1 */ > +#define K210_PCF_I2S0_OUT_D2 96 /* I2S0 Serial Data Output 2 */ > +#define K210_PCF_I2S0_OUT_D3 97 /* I2S0 Serial Data Output 3 */ > +#define K210_PCF_I2S1_MCLK 98 /* I2S1 Master Clock */ > +#define K210_PCF_I2S1_SCLK 99 /* I2S1 Serial Clock(BCLK) */ > +#define K210_PCF_I2S1_WS 100 /* I2S1 Word Select(LRCLK) */ > +#define K210_PCF_I2S1_IN_D0 101 /* I2S1 Serial Data Input 0 */ > +#define K210_PCF_I2S1_IN_D1 102 /* I2S1 Serial Data Input 1 */ > +#define K210_PCF_I2S1_IN_D2 103 /* I2S1 Serial Data Input 2 */ > +#define K210_PCF_I2S1_IN_D3 104 /* I2S1 Serial Data Input 3 */ > +#define K210_PCF_I2S1_OUT_D0 105 /* I2S1 Serial Data Output 0 */ > +#define K210_PCF_I2S1_OUT_D1 106 /* I2S1 Serial Data Output 1 */ > +#define K210_PCF_I2S1_OUT_D2 107 /* I2S1 Serial Data Output 2 */ > +#define K210_PCF_I2S1_OUT_D3 108 /* I2S1 Serial Data Output 3 */ > +#define K210_PCF_I2S2_MCLK 109 /* I2S2 Master Clock */ > +#define K210_PCF_I2S2_SCLK 110 /* I2S2 Serial Clock(BCLK) */ > +#define K210_PCF_I2S2_WS 111 /* I2S2 Word Select(LRCLK) */ > +#define K210_PCF_I2S2_IN_D0 112 /* I2S2 Serial Data Input 0 */ > +#define K210_PCF_I2S2_IN_D1 113 /* I2S2 Serial Data Input 1 */ > +#define K210_PCF_I2S2_IN_D2 114 /* I2S2 Serial Data Input 2 */ > +#define K210_PCF_I2S2_IN_D3 115 /* I2S2 Serial Data Input 3 */ > +#define K210_PCF_I2S2_OUT_D0 116 /* I2S2 Serial Data Output 0 */ > +#define K210_PCF_I2S2_OUT_D1 117 /* I2S2 Serial Data Output 1 */ > +#define K210_PCF_I2S2_OUT_D2 118 /* I2S2 Serial Data Output 2 */ > +#define K210_PCF_I2S2_OUT_D3 119 /* I2S2 Serial Data Output 3 */ > +#define K210_PCF_RESV0 120 /* Reserved function */ > +#define K210_PCF_RESV1 121 /* Reserved function */ > +#define K210_PCF_RESV2 122 /* Reserved function */ > +#define K210_PCF_RESV3 123 /* Reserved function */ > +#define K210_PCF_RESV4 124 /* Reserved function */ > +#define K210_PCF_RESV5 125 /* Reserved function */ > +#define K210_PCF_I2C0_SCLK 126 /* I2C0 Serial Clock */ > +#define K210_PCF_I2C0_SDA 127 /* I2C0 Serial Data */ > +#define K210_PCF_I2C1_SCLK 128 /* I2C1 Serial Clock */ > +#define K210_PCF_I2C1_SDA 129 /* I2C1 Serial Data */ > +#define K210_PCF_I2C2_SCLK 130 /* I2C2 Serial Clock */ > +#define K210_PCF_I2C2_SDA 131 /* I2C2 Serial Data */ > +#define K210_PCF_DVP_XCLK 132 /* DVP System Clock */ > +#define K210_PCF_DVP_RST 133 /* DVP System Reset */ > +#define K210_PCF_DVP_PWDN 134 /* DVP Power Down Mode */ > +#define K210_PCF_DVP_VSYNC 135 /* DVP Vertical Sync */ > +#define K210_PCF_DVP_HREF 136 /* DVP Horizontal Reference output */ > +#define K210_PCF_DVP_PCLK 137 /* Pixel Clock */ > +#define K210_PCF_DVP_D0 138 /* Data Bit 0 */ > +#define K210_PCF_DVP_D1 139 /* Data Bit 1 */ > +#define K210_PCF_DVP_D2 140 /* Data Bit 2 */ > +#define K210_PCF_DVP_D3 141 /* Data Bit 3 */ > +#define K210_PCF_DVP_D4 142 /* Data Bit 4 */ > +#define K210_PCF_DVP_D5 143 /* Data Bit 5 */ > +#define K210_PCF_DVP_D6 144 /* Data Bit 6 */ > +#define K210_PCF_DVP_D7 145 /* Data Bit 7 */ > +#define K210_PCF_SCCB_SCLK 146 /* Serial Camera Control Bus Clock */ > +#define K210_PCF_SCCB_SDA 147 /* Serial Camera Control Bus Data */ > +#define K210_PCF_UART1_CTS 148 /* UART1 Clear To Send */ > +#define K210_PCF_UART1_DSR 149 /* UART1 Data Set Ready */ > +#define K210_PCF_UART1_DCD 150 /* UART1 Data Carrier Detect */ > +#define K210_PCF_UART1_RI 151 /* UART1 Ring Indicator */ > +#define K210_PCF_UART1_SIR_IN 152 /* UART1 Serial Infrared Input */ > +#define K210_PCF_UART1_DTR 153 /* UART1 Data Terminal Ready */ > +#define K210_PCF_UART1_RTS 154 /* UART1 Request To Send */ > +#define K210_PCF_UART1_OUT2 155 /* UART1 User-designated Output 2 */ > +#define K210_PCF_UART1_OUT1 156 /* UART1 User-designated Output 1 */ > +#define K210_PCF_UART1_SIR_OUT 157 /* UART1 Serial Infrared Output */ > +#define K210_PCF_UART1_BAUD 158 /* UART1 Transmit Clock Output */ > +#define K210_PCF_UART1_RE 159 /* UART1 Receiver Output Enable */ > +#define K210_PCF_UART1_DE 160 /* UART1 Driver Output Enable */ > +#define K210_PCF_UART1_RS485_EN 161 /* UART1 RS485 Enable */ > +#define K210_PCF_UART2_CTS 162 /* UART2 Clear To Send */ > +#define K210_PCF_UART2_DSR 163 /* UART2 Data Set Ready */ > +#define K210_PCF_UART2_DCD 164 /* UART2 Data Carrier Detect */ > +#define K210_PCF_UART2_RI 165 /* UART2 Ring Indicator */ > +#define K210_PCF_UART2_SIR_IN 166 /* UART2 Serial Infrared Input */ > +#define K210_PCF_UART2_DTR 167 /* UART2 Data Terminal Ready */ > +#define K210_PCF_UART2_RTS 168 /* UART2 Request To Send */ > +#define K210_PCF_UART2_OUT2 169 /* UART2 User-designated Output 2 */ > +#define K210_PCF_UART2_OUT1 170 /* UART2 User-designated Output 1 */ > +#define K210_PCF_UART2_SIR_OUT 171 /* UART2 Serial Infrared Output */ > +#define K210_PCF_UART2_BAUD 172 /* UART2 Transmit Clock Output */ > +#define K210_PCF_UART2_RE 173 /* UART2 Receiver Output Enable */ > +#define K210_PCF_UART2_DE 174 /* UART2 Driver Output Enable */ > +#define K210_PCF_UART2_RS485_EN 175 /* UART2 RS485 Enable */ > +#define K210_PCF_UART3_CTS 176 /* UART3 Clear To Send */ > +#define K210_PCF_UART3_DSR 177 /* UART3 Data Set Ready */ > +#define K210_PCF_UART3_DCD 178 /* UART3 Data Carrier Detect */ > +#define K210_PCF_UART3_RI 179 /* UART3 Ring Indicator */ > +#define K210_PCF_UART3_SIR_IN 180 /* UART3 Serial Infrared Input */ > +#define K210_PCF_UART3_DTR 181 /* UART3 Data Terminal Ready */ > +#define K210_PCF_UART3_RTS 182 /* UART3 Request To Send */ > +#define K210_PCF_UART3_OUT2 183 /* UART3 User-designated Output 2 */ > +#define K210_PCF_UART3_OUT1 184 /* UART3 User-designated Output 1 */ > +#define K210_PCF_UART3_SIR_OUT 185 /* UART3 Serial Infrared Output */ > +#define K210_PCF_UART3_BAUD 186 /* UART3 Transmit Clock Output */ > +#define K210_PCF_UART3_RE 187 /* UART3 Receiver Output Enable */ > +#define K210_PCF_UART3_DE 188 /* UART3 Driver Output Enable */ > +#define K210_PCF_UART3_RS485_EN 189 /* UART3 RS485 Enable */ > +#define K210_PCF_TIMER0_TOGGLE1 190 /* TIMER0 Toggle Output 1 */ > +#define K210_PCF_TIMER0_TOGGLE2 191 /* TIMER0 Toggle Output 2 */ > +#define K210_PCF_TIMER0_TOGGLE3 192 /* TIMER0 Toggle Output 3 */ > +#define K210_PCF_TIMER0_TOGGLE4 193 /* TIMER0 Toggle Output 4 */ > +#define K210_PCF_TIMER1_TOGGLE1 194 /* TIMER1 Toggle Output 1 */ > +#define K210_PCF_TIMER1_TOGGLE2 195 /* TIMER1 Toggle Output 2 */ > +#define K210_PCF_TIMER1_TOGGLE3 196 /* TIMER1 Toggle Output 3 */ > +#define K210_PCF_TIMER1_TOGGLE4 197 /* TIMER1 Toggle Output 4 */ > +#define K210_PCF_TIMER2_TOGGLE1 198 /* TIMER2 Toggle Output 1 */ > +#define K210_PCF_TIMER2_TOGGLE2 199 /* TIMER2 Toggle Output 2 */ > +#define K210_PCF_TIMER2_TOGGLE3 200 /* TIMER2 Toggle Output 3 */ > +#define K210_PCF_TIMER2_TOGGLE4 201 /* TIMER2 Toggle Output 4 */ > +#define K210_PCF_CLK_SPI2 202 /* Clock SPI2 */ > +#define K210_PCF_CLK_I2C2 203 /* Clock I2C2 */ > +#define K210_PCF_INTERNAL0 204 /* Internal function signal 0 */ > +#define K210_PCF_INTERNAL1 205 /* Internal function signal 1 */ > +#define K210_PCF_INTERNAL2 206 /* Internal function signal 2 */ > +#define K210_PCF_INTERNAL3 207 /* Internal function signal 3 */ > +#define K210_PCF_INTERNAL4 208 /* Internal function signal 4 */ > +#define K210_PCF_INTERNAL5 209 /* Internal function signal 5 */ > +#define K210_PCF_INTERNAL6 210 /* Internal function signal 6 */ > +#define K210_PCF_INTERNAL7 211 /* Internal function signal 7 */ > +#define K210_PCF_INTERNAL8 212 /* Internal function signal 8 */ > +#define K210_PCF_INTERNAL9 213 /* Internal function signal 9 */ > +#define K210_PCF_INTERNAL10 214 /* Internal function signal 10 */ > +#define K210_PCF_INTERNAL11 215 /* Internal function signal 11 */ > +#define K210_PCF_INTERNAL12 216 /* Internal function signal 12 */ > +#define K210_PCF_INTERNAL13 217 /* Internal function signal 13 */ > +#define K210_PCF_INTERNAL14 218 /* Internal function signal 14 */ > +#define K210_PCF_INTERNAL15 219 /* Internal function signal 15 */ > +#define K210_PCF_INTERNAL16 220 /* Internal function signal 16 */ > +#define K210_PCF_INTERNAL17 221 /* Internal function signal 17 */ > +#define K210_PCF_CONSTANT 222 /* Constant function */ > +#define K210_PCF_INTERNAL18 223 /* Internal function signal 18 */ > +#define K210_PCF_DEBUG0 224 /* Debug function 0 */ > +#define K210_PCF_DEBUG1 225 /* Debug function 1 */ > +#define K210_PCF_DEBUG2 226 /* Debug function 2 */ > +#define K210_PCF_DEBUG3 227 /* Debug function 3 */ > +#define K210_PCF_DEBUG4 228 /* Debug function 4 */ > +#define K210_PCF_DEBUG5 229 /* Debug function 5 */ > +#define K210_PCF_DEBUG6 230 /* Debug function 6 */ > +#define K210_PCF_DEBUG7 231 /* Debug function 7 */ > +#define K210_PCF_DEBUG8 232 /* Debug function 8 */ > +#define K210_PCF_DEBUG9 233 /* Debug function 9 */ > +#define K210_PCF_DEBUG10 234 /* Debug function 10 */ > +#define K210_PCF_DEBUG11 235 /* Debug function 11 */ > +#define K210_PCF_DEBUG12 236 /* Debug function 12 */ > +#define K210_PCF_DEBUG13 237 /* Debug function 13 */ > +#define K210_PCF_DEBUG14 238 /* Debug function 14 */ > +#define K210_PCF_DEBUG15 239 /* Debug function 15 */ > +#define K210_PCF_DEBUG16 240 /* Debug function 16 */ > +#define K210_PCF_DEBUG17 241 /* Debug function 17 */ > +#define K210_PCF_DEBUG18 242 /* Debug function 18 */ > +#define K210_PCF_DEBUG19 243 /* Debug function 19 */ > +#define K210_PCF_DEBUG20 244 /* Debug function 20 */ > +#define K210_PCF_DEBUG21 245 /* Debug function 21 */ > +#define K210_PCF_DEBUG22 246 /* Debug function 22 */ > +#define K210_PCF_DEBUG23 247 /* Debug function 23 */ > +#define K210_PCF_DEBUG24 248 /* Debug function 24 */ > +#define K210_PCF_DEBUG25 249 /* Debug function 25 */ > +#define K210_PCF_DEBUG26 250 /* Debug function 26 */ > +#define K210_PCF_DEBUG27 251 /* Debug function 27 */ > +#define K210_PCF_DEBUG28 252 /* Debug function 28 */ > +#define K210_PCF_DEBUG29 253 /* Debug function 29 */ > +#define K210_PCF_DEBUG30 254 /* Debug function 30 */ > +#define K210_PCF_DEBUG31 255 /* Debug function 31 */ > + > +/* > + * The K210 only implements 8 drive levels, even though there is register space > + * for 16 > + */ > +#define K210_PC_DRIVE_SHIFT 8 > +#define K210_PC_DRIVE_MASK GENMASK(11, 8) > +#define K210_PC_DRIVE_0 (0 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_1 (1 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_2 (2 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_3 (3 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_4 (4 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_5 (5 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_6 (6 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_7 (7 << K210_PC_DRIVE_SHIFT) > +#define K210_PC_DRIVE_MAX 7 > + > +#define K210_PC_MODE_MASK GENMASK(23, 12) > +/* > + * output enabled == PC_OE & (PC_OE_INV ^ FUNCTION_OE) where FUNCTION_OE is a > + * physical signal from the function > + */ > +#define K210_PC_OE BIT(12) /* Output Enable */ > +#define K210_PC_OE_INV BIT(13) /* INVert function-controlled Output Enable */ > +#define K210_PC_DO_OE BIT(14) /* set Data Out to the Output Enable signal */ > +#define K210_PC_DO_INV BIT(15) /* INVert final Data Output */ > +#define K210_PC_PU BIT(16) /* Pull Up */ > +#define K210_PC_PD BIT(17) /* Pull Down */ > +/* Strong pull up not implemented on K210 */ > +#define K210_PC_SL BIT(19) /* reduce SLew rate to prevent overshoot */ > +/* Same semantics as OE above */ > +#define K210_PC_IE BIT(20) /* Input Enable */ > +#define K210_PC_IE_INV BIT(21) /* INVert function-controlled Input Enable */ > +#define K210_PC_DI_INV BIT(22) /* INVert Data Input */ > +#define K210_PC_ST BIT(23) /* Schmitt Trigger */ > +#define K210_PC_DI BIT(31) /* raw Data Input */ > +#define K210_PC_BIAS_MASK (K210_PC_PU & K210_PC_PD) > + > +#define K210_PC_MODE_IN (K210_PC_IE | K210_PC_ST) > +#define K210_PC_MODE_OUT (K210_PC_DRIVE_7 | K210_PC_OE) > +#define K210_PC_MODE_I2C (K210_PC_MODE_IN | K210_PC_IE_INV | K210_PC_SL | \ > + K210_PC_OE | K210_PC_OE_INV | K210_PC_PU) > +#define K210_PC_MODE_SPI (K210_PC_MODE_IN | K210_PC_IE_INV | \ > + K210_PC_MODE_OUT | K210_PC_OE_INV) > +#define K210_PC_MODE_GPIO (K210_PC_MODE_IN | K210_PC_MODE_OUT) > + > +struct k210_fpioa { > + u32 pins[48]; > + u32 tie_en[8]; > + u32 tie_val[8]; > +}; > + > +#endif /* K210_PINCTRL_H */ > diff --git a/include/dt-bindings/pinctrl/k210-pinctrl.h b/include/dt-bindings/pinctrl/k210-pinctrl.h > new file mode 100644 > index 0000000000..6d44ea765b > --- /dev/null > +++ b/include/dt-bindings/pinctrl/k210-pinctrl.h > @@ -0,0 +1,12 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* > + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> > + */ > + > +#ifndef DT_K210_PINCTRL_H > +#define DT_K210_PINCTRL_H > + > +#define K210_PC_POWER_3V3 0 > +#define K210_PC_POWER_1V8 1 > + > +#endif /* DT_K210_PINCTRL_H */ > -- > 2.25.0 >
On 3/4/20 1:47 AM, Rick Chen wrote: > Hi Sean > >> The Fully-Programmable Input/Output Array (FPIOA) device controls pin >> multiplexing on the K210. The FPIOA can remap any supported function to any >> multifunctional IO pin. It can also perform basic GPIO functions, such as >> reading the current value of a pin. >> >> Signed-off-by: Sean Anderson <seanga2 at gmail.com> >> --- >> >> Changes in v5: >> - New >> >> MAINTAINERS | 2 + >> .../pinctrl/kendryte,k210-fpioa.txt | 116 +++ >> drivers/pinctrl/Kconfig | 1 + >> drivers/pinctrl/Makefile | 1 + >> drivers/pinctrl/kendryte/Kconfig | 7 + >> drivers/pinctrl/kendryte/Makefile | 1 + >> drivers/pinctrl/kendryte/pinctrl.c | 663 ++++++++++++++++++ >> drivers/pinctrl/kendryte/pinctrl.h | 325 +++++++++ >> include/dt-bindings/pinctrl/k210-pinctrl.h | 12 + >> 9 files changed, 1128 insertions(+) >> create mode 100644 doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt >> create mode 100644 drivers/pinctrl/kendryte/Kconfig >> create mode 100644 drivers/pinctrl/kendryte/Makefile >> create mode 100644 drivers/pinctrl/kendryte/pinctrl.c >> create mode 100644 drivers/pinctrl/kendryte/pinctrl.h >> create mode 100644 include/dt-bindings/pinctrl/k210-pinctrl.h >> > > Please checkpatch and fix > > total: 3 errors, 13 warnings, 5 checks, 1147 lines checked > > Thanks > Rick Here is the output of checkpatch. drivers/pinctrl/kendryte/pinctrl.c:25: error: space prohibited before open square bracket '[' This is from using macros in the style #define FOO(x) [FOO_##x] = {\ ... } I think this is more elegant than putting the [] on a separate line, but it can of course be changed. drivers/pinctrl/kendryte/pinctrl.c:76: check: Please use a blank line after function/struct/union/enum declarations This is from using "local" macros, e.g. #define FOO(x) FOO_##x enum foo { FOO(bar), FOO(baz) }; #undef FOO I think keeping the undefinition of FOO close to where it is last used aids readability. This can of course be changed (perhaps by moving the (un)definition inside the enum). drivers/pinctrl/kendryte/pinctrl.c:83: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:106: warning: Prefer 'unsigned int' to bare use of 'unsigned' All these warnings are due to following the function definitions as defined in pinctrl_ops. drivers/pinctrl/kendryte/pinctrl.c:122: error: space prohibited before open square bracket '[' drivers/pinctrl/kendryte/pinctrl.c:133: check: Please use a blank line after function/struct/union/enum declarations drivers/pinctrl/kendryte/pinctrl.c:141: error: space prohibited before open square bracket '[' drivers/pinctrl/kendryte/pinctrl.c:145: check: Please use a blank line after function/struct/union/enum declarations drivers/pinctrl/kendryte/pinctrl.c:403: check: Please use a blank line after function/struct/union/enum declarations drivers/pinctrl/kendryte/pinctrl.c:411: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:416: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:417: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:442: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:453: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:454: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:454: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:529: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:529: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:530: warning: Prefer 'unsigned int' to bare use of 'unsigned' drivers/pinctrl/kendryte/pinctrl.c:612: warning: ENOSYS means 'invalid syscall nr' and nothing else drivers/pinctrl/kendryte/pinctrl.h:281: check: Prefer using the BIT macro This is from the line #define K210_PC_DRIVE_1 (1 << K210_PC_DRIVE_SHIFT) Where there are several succeeding and preceding lines which have different values instead of 1. --Sean
diff --git a/MAINTAINERS b/MAINTAINERS index 8e9e0569ba..8725bcf9af 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -809,7 +809,9 @@ RISC-V KENDRYTE M: Sean Anderson <seanga2 at gmail.com> S: Maintained F: doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt +F: doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt F: drivers/clk/kendryte/ +F: drivers/pinctrl/kendryte/ F: include/kendryte/ RNG diff --git a/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt b/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt new file mode 100644 index 0000000000..299ce65304 --- /dev/null +++ b/doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt @@ -0,0 +1,116 @@ +Kendryte K210 FPIOA + +This binding describes the Fully-Programmable Input/Output Array found on +Kendryte K210 SoCs. Any of the 256 functions can be mapped to any of the 48 +pins. + +Required properties: +- compatible: should be "kendryte,k210-fpioa" +- reg: address and length of the FPIOA registers +- kendryte,sysctl: phandle to the "sysctl" register map node +- kendryte,power-offset: offset in the register map of the power bank control + register (in bytes) + +Configuration nodes + +Pin configuration nodes are documented in pinctrl-bindings.txt + +Valid values for pins, groups, and function names: + +pins: + "IO_X", where X is a number from 0 to 47. + +groups: + A0, A1, A2, B0, B1, B2, C0, C1 + +functions: + JTAG_TCLK, JTAG_TDI, JTAG_TMS, JTAG_TDO, SPI0_D0, SPI0_D1, SPI0_D2, + SPI0_D3, SPI0_D4, SPI0_D5, SPI0_D6, SPI0_D7, SPI0_SS0, SPI0_SS1, + SPI0_SS2, SPI0_SS3, SPI0_ARB, SPI0_SCLK, UARTHS_RX, UARTHS_TX, RESV6, + RESV7, CLK_SPI1, CLK_I2C1, GPIOHS0, GPIOHS1, GPIOHS2, GPIOHS3, GPIOHS4, + GPIOHS5, GPIOHS6, GPIOHS7, GPIOHS8, GPIOHS9, GPIOHS10, GPIOHS11, + GPIOHS12, GPIOHS13, GPIOHS14, GPIOHS15, GPIOHS16, GPIOHS17, GPIOHS18, + GPIOHS19, GPIOHS20, GPIOHS21, GPIOHS22, GPIOHS23, GPIOHS24, GPIOHS25, + GPIOHS26, GPIOHS27, GPIOHS28, GPIOHS29, GPIOHS30, GPIOHS31, GPIO0, + GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, UART1_RX, UART1_TX, + UART2_RX, UART2_TX, UART3_RX, UART3_TX, SPI1_D0, SPI1_D1, SPI1_D2, + SPI1_D3, SPI1_D4, SPI1_D5, SPI1_D6, SPI1_D7, SPI1_SS0, SPI1_SS1, + SPI1_SS2, SPI1_SS3, SPI1_ARB, SPI1_SCLK, SPI2_D0, SPI2_SS, SPI2_SCLK, + I2S0_MCLK, I2S0_SCLK, I2S0_WS, I2S0_IN_D0, I2S0_IN_D1, I2S0_IN_D2, + I2S0_IN_D3, I2S0_OUT_D0, I2S0_OUT_D1, I2S0_OUT_D2, I2S0_OUT_D3, + I2S1_MCLK, I2S1_SCLK, I2S1_WS, I2S1_IN_D0, I2S1_IN_D1, I2S1_IN_D2, + I2S1_IN_D3, I2S1_OUT_D0, I2S1_OUT_D1, I2S1_OUT_D2, I2S1_OUT_D3, + I2S2_MCLK, I2S2_SCLK, I2S2_WS, I2S2_IN_D0, I2S2_IN_D1, I2S2_IN_D2, + I2S2_IN_D3, I2S2_OUT_D0, I2S2_OUT_D1, I2S2_OUT_D2, I2S2_OUT_D3, RESV0, + RESV1, RESV2, RESV3, RESV4, RESV5, I2C0_SCLK, I2C0_SDA, I2C1_SCLK, + I2C1_SDA, I2C2_SCLK, I2C2_SDA, DVP_XCLK, DVP_RST, DVP_PWDN, DVP_VSYNC, + DVP_HREF, DVP_PCLK, DVP_D0, DVP_D1, DVP_D2, DVP_D3, DVP_D4, DVP_D5, + DVP_D6, DVP_D7, SCCB_SCLK, SCCB_SDA, UART1_CTS, UART1_DSR, UART1_DCD, + UART1_RI, UART1_SIR_IN, UART1_DTR, UART1_RTS, UART1_OUT2, UART1_OUT1, + UART1_SIR_OUT, UART1_BAUD, UART1_RE, UART1_DE, UART1_RS485_EN, + UART2_CTS, UART2_DSR, UART2_DCD, UART2_RI, UART2_SIR_IN, UART2_DTR, + UART2_RTS, UART2_OUT2, UART2_OUT1, UART2_SIR_OUT, UART2_BAUD, UART2_RE, + UART2_DE, UART2_RS485_EN, UART3_CTS, UART3_DSR, UART3_DCD, UART3_RI, + UART3_SIR_IN, UART3_DTR, UART3_RTS, UART3_OUT2, UART3_OUT1, + UART3_SIR_OUT, UART3_BAUD, UART3_RE, UART3_DE, UART3_RS485_EN, + TIMER0_TOGGLE1, TIMER0_TOGGLE2, TIMER0_TOGGLE3, TIMER0_TOGGLE4, + TIMER1_TOGGLE1, TIMER1_TOGGLE2, TIMER1_TOGGLE3, TIMER1_TOGGLE4, + TIMER2_TOGGLE1, TIMER2_TOGGLE2, TIMER2_TOGGLE3, TIMER2_TOGGLE4, + CLK_SPI2, CLK_I2C2, INTERNAL0, INTERNAL1, INTERNAL2, INTERNAL3, + INTERNAL4, INTERNAL5, INTERNAL6, INTERNAL7, INTERNAL8, INTERNAL9, + INTERNAL10, INTERNAL11, INTERNAL12, INTERNAL13, INTERNAL14, INTERNAL15, + INTERNAL16, INTERNAL17, CONSTANT, INTERNAL18, DEBUG0, DEBUG1, DEBUG2, + DEBUG3, DEBUG4, DEBUG5, DEBUG6, DEBUG7, DEBUG8, DEBUG9, DEBUG10, + DEBUG11, DEBUG12, DEBUG13, DEBUG14, DEBUG15, DEBUG16, DEBUG17, DEBUG18, + DEBUG19, DEBUG20, DEBUG21, DEBUG22, DEBUG23, DEBUG24, DEBUG25, DEBUG26, + DEBUG27, DEBUG28, DEBUG29, DEBUG30, DEBUG31 + +Valid properties include: + bias-disable, bias-pull-down, bias-pull-up, drive-strength, + drive-strength-ua, input-enable, input-disable, input-schmitt-enable, + input-schmitt-disable, power-source, output-low, output-high, + output-enable, output-disable, slew-rate + +Notes on specific properties include: +- bias-pull-up, -down, and -pin-default: The pull strength cannot be configured. +- drive-strength: There are 8 drive strength settings between 11 and 50 mA +- power-source: Controls the output voltage of a bank of pins. Either + K210_PC_POWER_1V8 or K210_PC_POWER_3V3 may be specified. This property cannot + be specified for individual pins. +- slew-rate: Specifying this property reduces the slew rate + +Example: +fpioa: pinmux at 502B0000 { + compatible = "kendryte,k210-fpioa"; + reg = <0x502B0000 0x100>; + kendryte,sysctl = <&sysctl>; + kendryte,power-offset = <K210_SYSCTL_POWER_SEL>; + + fpioa_jtag: jtag { + voltage { + group = "A0"; + power-source = <K210_PC_POWER_3V3>; + }; + tck { + function = "JTAG_TCLK"; + pins = "IO_0"; + }; + tdi { + function = "JTAG_TDI"; + pins = "IO_1"; + }; + tms { + function = "JTAG_TMS"; + pins = "IO_2"; + }; + tdo { + function = "JTAG_TDO"; + pins = "IO_3"; + }; + }; + + fpioa_isp: isp { + function = "GPIOHS0"; + pins = "IO_16"; + }; +}; diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 83e39b9de3..9ec56c7735 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -289,6 +289,7 @@ endif source "drivers/pinctrl/broadcom/Kconfig" source "drivers/pinctrl/exynos/Kconfig" source "drivers/pinctrl/intel/Kconfig" +source "drivers/pinctrl/kendryte/Kconfig" source "drivers/pinctrl/mediatek/Kconfig" source "drivers/pinctrl/meson/Kconfig" source "drivers/pinctrl/mscc/Kconfig" diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 4f662c4f6d..1fe66fed3c 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/ obj-$(CONFIG_PINCTRL_PIC32) += pinctrl_pic32.o obj-$(CONFIG_PINCTRL_EXYNOS) += exynos/ +obj-$(CONFIG_PINCTRL_K210) += kendryte/ obj-$(CONFIG_PINCTRL_MESON) += meson/ obj-$(CONFIG_PINCTRL_MTK) += mediatek/ obj-$(CONFIG_PINCTRL_MSCC) += mscc/ diff --git a/drivers/pinctrl/kendryte/Kconfig b/drivers/pinctrl/kendryte/Kconfig new file mode 100644 index 0000000000..6fc10e9516 --- /dev/null +++ b/drivers/pinctrl/kendryte/Kconfig @@ -0,0 +1,7 @@ +config PINCTRL_K210 + bool "Kendryte K210 Fully-Programmable Input/Output Array driver" + depends on DM && PINCTRL_GENERIC + help + Support pin multiplexing on the K210. The "FPIOA" can remap any + supported function to any multifunctional IO pin. It can also perform + basic GPIO functions, such as reading the current value of a pin. diff --git a/drivers/pinctrl/kendryte/Makefile b/drivers/pinctrl/kendryte/Makefile new file mode 100644 index 0000000000..1c10d7a929 --- /dev/null +++ b/drivers/pinctrl/kendryte/Makefile @@ -0,0 +1 @@ +obj-y += pinctrl.o diff --git a/drivers/pinctrl/kendryte/pinctrl.c b/drivers/pinctrl/kendryte/pinctrl.c new file mode 100644 index 0000000000..3f7de0e706 --- /dev/null +++ b/drivers/pinctrl/kendryte/pinctrl.c @@ -0,0 +1,663 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <dm/pinctrl.h> +#include <dt-bindings/pinctrl/k210-pinctrl.h> +#include <mapmem.h> +#include <regmap.h> +#include <syscon.h> +#include <asm/io.h> +#include <linux/err.h> +#include "pinctrl.h" + +struct k210_pc_priv { + struct clk clk; + struct k210_fpioa __iomem *fpioa; /* FPIOA register */ + struct regmap *sysctl; /* Sysctl regmap */ + u32 power_offset; /* Power bank register offset */ +}; + +#define PIN(i) [i] = "IO_" #i +static const char k210_pc_pin_names[][6] = { + PIN(0), + PIN(1), + PIN(2), + PIN(3), + PIN(4), + PIN(5), + PIN(6), + PIN(7), + PIN(8), + PIN(9), + PIN(10), + PIN(11), + PIN(12), + PIN(13), + PIN(14), + PIN(15), + PIN(16), + PIN(17), + PIN(18), + PIN(19), + PIN(20), + PIN(21), + PIN(22), + PIN(23), + PIN(24), + PIN(25), + PIN(26), + PIN(27), + PIN(28), + PIN(29), + PIN(30), + PIN(31), + PIN(32), + PIN(33), + PIN(34), + PIN(35), + PIN(36), + PIN(37), + PIN(38), + PIN(39), + PIN(40), + PIN(41), + PIN(42), + PIN(43), + PIN(44), + PIN(45), + PIN(46), + PIN(47), +}; +#undef PIN + +static int k210_pc_get_pins_count(struct udevice *dev) +{ + return ARRAY_SIZE(k210_pc_pin_names); +}; + +static const char *k210_pc_get_pin_name(struct udevice *dev, unsigned selector) +{ + return k210_pc_pin_names[selector]; +} + +/* These are just power domains */ +static const char k210_pc_group_names[][3] = { + [0] = "A0", + [1] = "A1", + [2] = "A2", + [3] = "B0", + [4] = "B1", + [5] = "B2", + [6] = "C0", + [7] = "C1", +}; + +static int k210_pc_get_groups_count(struct udevice *dev) +{ + return ARRAY_SIZE(k210_pc_group_names); +} + +static const char *k210_pc_get_group_name(struct udevice *dev, + unsigned selector) +{ + return k210_pc_group_names[selector]; +} + +enum k210_pc_mode_id { + K210_PC_DEFAULT_DISABLED, + K210_PC_DEFAULT_IN, + K210_PC_DEFAULT_IN_TIE, + K210_PC_DEFAULT_OUT, + K210_PC_DEFAULT_I2C, + K210_PC_DEFAULT_SPI, + K210_PC_DEFAULT_GPIO, + K210_PC_DEFAULT_INT13, +}; + +#define DEFAULT(mode) [K210_PC_DEFAULT_##mode] = K210_PC_MODE_##mode +static const u32 k210_pc_mode_id_to_mode[] = { + [K210_PC_DEFAULT_DISABLED] = 0, + DEFAULT(IN), + [K210_PC_DEFAULT_IN_TIE] = K210_PC_MODE_IN, + DEFAULT(OUT), + DEFAULT(I2C), + DEFAULT(SPI), + DEFAULT(GPIO), + [K210_PC_DEFAULT_INT13] = K210_PC_MODE_IN | K210_PC_PU, +}; +#undef DEFAULT + +/* This saves around 2K vs having a pointer+mode */ +struct k210_pcf_info { + char name[15]; + u8 mode_id; +}; + +#define FUNC(id, mode) [K210_PCF_##id] = { \ + .name = #id, \ + .mode_id = K210_PC_DEFAULT_##mode \ +} +static const struct k210_pcf_info k210_pcf_infos[] = { + FUNC(JTAG_TCLK, IN), + FUNC(JTAG_TDI, IN), + FUNC(JTAG_TMS, IN), + FUNC(JTAG_TDO, OUT), + FUNC(SPI0_D0, SPI), + FUNC(SPI0_D1, SPI), + FUNC(SPI0_D2, SPI), + FUNC(SPI0_D3, SPI), + FUNC(SPI0_D4, SPI), + FUNC(SPI0_D5, SPI), + FUNC(SPI0_D6, SPI), + FUNC(SPI0_D7, SPI), + FUNC(SPI0_SS0, OUT), + FUNC(SPI0_SS1, OUT), + FUNC(SPI0_SS2, OUT), + FUNC(SPI0_SS3, OUT), + FUNC(SPI0_ARB, IN_TIE), + FUNC(SPI0_SCLK, OUT), + FUNC(UARTHS_RX, IN), + FUNC(UARTHS_TX, OUT), + FUNC(RESV6, IN), + FUNC(RESV7, IN), + FUNC(CLK_SPI1, OUT), + FUNC(CLK_I2C1, OUT), + FUNC(GPIOHS0, GPIO), + FUNC(GPIOHS1, GPIO), + FUNC(GPIOHS2, GPIO), + FUNC(GPIOHS3, GPIO), + FUNC(GPIOHS4, GPIO), + FUNC(GPIOHS5, GPIO), + FUNC(GPIOHS6, GPIO), + FUNC(GPIOHS7, GPIO), + FUNC(GPIOHS8, GPIO), + FUNC(GPIOHS9, GPIO), + FUNC(GPIOHS10, GPIO), + FUNC(GPIOHS11, GPIO), + FUNC(GPIOHS12, GPIO), + FUNC(GPIOHS13, GPIO), + FUNC(GPIOHS14, GPIO), + FUNC(GPIOHS15, GPIO), + FUNC(GPIOHS16, GPIO), + FUNC(GPIOHS17, GPIO), + FUNC(GPIOHS18, GPIO), + FUNC(GPIOHS19, GPIO), + FUNC(GPIOHS20, GPIO), + FUNC(GPIOHS21, GPIO), + FUNC(GPIOHS22, GPIO), + FUNC(GPIOHS23, GPIO), + FUNC(GPIOHS24, GPIO), + FUNC(GPIOHS25, GPIO), + FUNC(GPIOHS26, GPIO), + FUNC(GPIOHS27, GPIO), + FUNC(GPIOHS28, GPIO), + FUNC(GPIOHS29, GPIO), + FUNC(GPIOHS30, GPIO), + FUNC(GPIOHS31, GPIO), + FUNC(GPIO0, GPIO), + FUNC(GPIO1, GPIO), + FUNC(GPIO2, GPIO), + FUNC(GPIO3, GPIO), + FUNC(GPIO4, GPIO), + FUNC(GPIO5, GPIO), + FUNC(GPIO6, GPIO), + FUNC(GPIO7, GPIO), + FUNC(UART1_RX, IN), + FUNC(UART1_TX, OUT), + FUNC(UART2_RX, IN), + FUNC(UART2_TX, OUT), + FUNC(UART3_RX, IN), + FUNC(UART3_TX, OUT), + FUNC(SPI1_D0, SPI), + FUNC(SPI1_D1, SPI), + FUNC(SPI1_D2, SPI), + FUNC(SPI1_D3, SPI), + FUNC(SPI1_D4, SPI), + FUNC(SPI1_D5, SPI), + FUNC(SPI1_D6, SPI), + FUNC(SPI1_D7, SPI), + FUNC(SPI1_SS0, OUT), + FUNC(SPI1_SS1, OUT), + FUNC(SPI1_SS2, OUT), + FUNC(SPI1_SS3, OUT), + FUNC(SPI1_ARB, IN_TIE), + FUNC(SPI1_SCLK, OUT), + FUNC(SPI2_D0, SPI), + FUNC(SPI2_SS, IN), + FUNC(SPI2_SCLK, IN), + FUNC(I2S0_MCLK, OUT), + FUNC(I2S0_SCLK, OUT), + FUNC(I2S0_WS, OUT), + FUNC(I2S0_IN_D0, IN), + FUNC(I2S0_IN_D1, IN), + FUNC(I2S0_IN_D2, IN), + FUNC(I2S0_IN_D3, IN), + FUNC(I2S0_OUT_D0, OUT), + FUNC(I2S0_OUT_D1, OUT), + FUNC(I2S0_OUT_D2, OUT), + FUNC(I2S0_OUT_D3, OUT), + FUNC(I2S1_MCLK, OUT), + FUNC(I2S1_SCLK, OUT), + FUNC(I2S1_WS, OUT), + FUNC(I2S1_IN_D0, IN), + FUNC(I2S1_IN_D1, IN), + FUNC(I2S1_IN_D2, IN), + FUNC(I2S1_IN_D3, IN), + FUNC(I2S1_OUT_D0, OUT), + FUNC(I2S1_OUT_D1, OUT), + FUNC(I2S1_OUT_D2, OUT), + FUNC(I2S1_OUT_D3, OUT), + FUNC(I2S2_MCLK, OUT), + FUNC(I2S2_SCLK, OUT), + FUNC(I2S2_WS, OUT), + FUNC(I2S2_IN_D0, IN), + FUNC(I2S2_IN_D1, IN), + FUNC(I2S2_IN_D2, IN), + FUNC(I2S2_IN_D3, IN), + FUNC(I2S2_OUT_D0, OUT), + FUNC(I2S2_OUT_D1, OUT), + FUNC(I2S2_OUT_D2, OUT), + FUNC(I2S2_OUT_D3, OUT), + FUNC(RESV0, DISABLED), + FUNC(RESV1, DISABLED), + FUNC(RESV2, DISABLED), + FUNC(RESV3, DISABLED), + FUNC(RESV4, DISABLED), + FUNC(RESV5, DISABLED), + FUNC(I2C0_SCLK, I2C), + FUNC(I2C0_SDA, I2C), + FUNC(I2C1_SCLK, I2C), + FUNC(I2C1_SDA, I2C), + FUNC(I2C2_SCLK, I2C), + FUNC(I2C2_SDA, I2C), + FUNC(DVP_XCLK, OUT), + FUNC(DVP_RST, OUT), + FUNC(DVP_PWDN, OUT), + FUNC(DVP_VSYNC, IN), + FUNC(DVP_HREF, IN), + FUNC(DVP_PCLK, IN), + FUNC(DVP_D0, IN), + FUNC(DVP_D1, IN), + FUNC(DVP_D2, IN), + FUNC(DVP_D3, IN), + FUNC(DVP_D4, IN), + FUNC(DVP_D5, IN), + FUNC(DVP_D6, IN), + FUNC(DVP_D7, IN), + FUNC(SCCB_SCLK, I2C), + FUNC(SCCB_SDA, I2C), + FUNC(UART1_CTS, IN), + FUNC(UART1_DSR, IN), + FUNC(UART1_DCD, IN), + FUNC(UART1_RI, IN), + FUNC(UART1_SIR_IN, IN), + FUNC(UART1_DTR, OUT), + FUNC(UART1_RTS, OUT), + FUNC(UART1_OUT2, OUT), + FUNC(UART1_OUT1, OUT), + FUNC(UART1_SIR_OUT, OUT), + FUNC(UART1_BAUD, OUT), + FUNC(UART1_RE, OUT), + FUNC(UART1_DE, OUT), + FUNC(UART1_RS485_EN, OUT), + FUNC(UART2_CTS, IN), + FUNC(UART2_DSR, IN), + FUNC(UART2_DCD, IN), + FUNC(UART2_RI, IN), + FUNC(UART2_SIR_IN, IN), + FUNC(UART2_DTR, OUT), + FUNC(UART2_RTS, OUT), + FUNC(UART2_OUT2, OUT), + FUNC(UART2_OUT1, OUT), + FUNC(UART2_SIR_OUT, OUT), + FUNC(UART2_BAUD, OUT), + FUNC(UART2_RE, OUT), + FUNC(UART2_DE, OUT), + FUNC(UART2_RS485_EN, OUT), + FUNC(UART3_CTS, IN), + FUNC(UART3_DSR, IN), + FUNC(UART3_DCD, IN), + FUNC(UART3_RI, IN), + FUNC(UART3_SIR_IN, IN), + FUNC(UART3_DTR, OUT), + FUNC(UART3_RTS, OUT), + FUNC(UART3_OUT2, OUT), + FUNC(UART3_OUT1, OUT), + FUNC(UART3_SIR_OUT, OUT), + FUNC(UART3_BAUD, OUT), + FUNC(UART3_RE, OUT), + FUNC(UART3_DE, OUT), + FUNC(UART3_RS485_EN, OUT), + FUNC(TIMER0_TOGGLE1, OUT), + FUNC(TIMER0_TOGGLE2, OUT), + FUNC(TIMER0_TOGGLE3, OUT), + FUNC(TIMER0_TOGGLE4, OUT), + FUNC(TIMER1_TOGGLE1, OUT), + FUNC(TIMER1_TOGGLE2, OUT), + FUNC(TIMER1_TOGGLE3, OUT), + FUNC(TIMER1_TOGGLE4, OUT), + FUNC(TIMER2_TOGGLE1, OUT), + FUNC(TIMER2_TOGGLE2, OUT), + FUNC(TIMER2_TOGGLE3, OUT), + FUNC(TIMER2_TOGGLE4, OUT), + FUNC(CLK_SPI2, OUT), + FUNC(CLK_I2C2, OUT), + FUNC(INTERNAL0, OUT), + FUNC(INTERNAL1, OUT), + FUNC(INTERNAL2, OUT), + FUNC(INTERNAL3, OUT), + FUNC(INTERNAL4, OUT), + FUNC(INTERNAL5, OUT), + FUNC(INTERNAL6, OUT), + FUNC(INTERNAL7, OUT), + FUNC(INTERNAL8, OUT), + FUNC(INTERNAL9, IN), + FUNC(INTERNAL10, IN), + FUNC(INTERNAL11, IN), + FUNC(INTERNAL12, IN), + FUNC(INTERNAL13, INT13), + FUNC(INTERNAL14, I2C), + FUNC(INTERNAL15, IN), + FUNC(INTERNAL16, IN), + FUNC(INTERNAL17, IN), + FUNC(CONSTANT, DISABLED), + FUNC(INTERNAL18, IN), + FUNC(DEBUG0, OUT), + FUNC(DEBUG1, OUT), + FUNC(DEBUG2, OUT), + FUNC(DEBUG3, OUT), + FUNC(DEBUG4, OUT), + FUNC(DEBUG5, OUT), + FUNC(DEBUG6, OUT), + FUNC(DEBUG7, OUT), + FUNC(DEBUG8, OUT), + FUNC(DEBUG9, OUT), + FUNC(DEBUG10, OUT), + FUNC(DEBUG11, OUT), + FUNC(DEBUG12, OUT), + FUNC(DEBUG13, OUT), + FUNC(DEBUG14, OUT), + FUNC(DEBUG15, OUT), + FUNC(DEBUG16, OUT), + FUNC(DEBUG17, OUT), + FUNC(DEBUG18, OUT), + FUNC(DEBUG19, OUT), + FUNC(DEBUG20, OUT), + FUNC(DEBUG21, OUT), + FUNC(DEBUG22, OUT), + FUNC(DEBUG23, OUT), + FUNC(DEBUG24, OUT), + FUNC(DEBUG25, OUT), + FUNC(DEBUG26, OUT), + FUNC(DEBUG27, OUT), + FUNC(DEBUG28, OUT), + FUNC(DEBUG29, OUT), + FUNC(DEBUG30, OUT), + FUNC(DEBUG31, OUT), +}; +#undef FUNC + +int k210_pc_get_functions_count(struct udevice *dev) +{ + return ARRAY_SIZE(k210_pcf_infos); +} + +static const char *k210_pc_get_function_name(struct udevice *dev, + unsigned selector) +{ + return k210_pcf_infos[selector].name; +} + +static int k210_pc_pinmux_set(struct udevice *dev, unsigned pin_selector, + unsigned func_selector) +{ + struct k210_pc_priv *priv = dev_get_priv(dev); + const struct k210_pcf_info *info = &k210_pcf_infos[func_selector]; + u32 mode = k210_pc_mode_id_to_mode[info->mode_id]; + u32 val = func_selector | mode; + + log_debug("setting pin %s to %s with mode %.8x\n", + k210_pc_pin_names[pin_selector], info->name, mode); + writel(val, &priv->fpioa->pins[pin_selector]); + return 0; +} + +/* Max drive strength in uA */ +static const int k210_pc_drive_strength[] = { + [0] = 11200, + [1] = 16800, + [2] = 22300, + [3] = 27800, + [4] = 33300, + [5] = 38700, + [6] = 44100, + [7] = 49500, +}; + +static int k210_pc_get_drive(unsigned max_strength_ua) +{ + int i; + + for (i = K210_PC_DRIVE_MAX; i; i--) + if (k210_pc_drive_strength[i] < max_strength_ua) + return i; + + return -EINVAL; +} + +static int k210_pc_pinconf_set(struct udevice *dev, unsigned pin_selector, + unsigned param, unsigned argument) +{ + struct k210_pc_priv *priv = dev_get_priv(dev); + u32 val = readl(&priv->fpioa->pins[pin_selector]); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + val &= ~K210_PC_BIAS_MASK; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + if (argument) + val |= K210_PC_PD; + else + return -EINVAL; + break; + case PIN_CONFIG_BIAS_PULL_UP: + if (argument) + val |= K210_PC_PD; + else + return -EINVAL; + break; + case PIN_CONFIG_DRIVE_STRENGTH: + argument *= 1000; + case PIN_CONFIG_DRIVE_STRENGTH_UA: { + int drive = k210_pc_get_drive(argument); + + if (IS_ERR_VALUE(drive)) + return drive; + val &= ~K210_PC_DRIVE_MASK; + val |= FIELD_PREP(K210_PC_DRIVE_MASK, drive); + break; + } + case PIN_CONFIG_INPUT_ENABLE: + if (argument) + val |= K210_PC_IE; + else + val &= ~K210_PC_IE; + break; + case PIN_CONFIG_INPUT_SCHMITT: + argument = 1; + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + if (argument) + val |= K210_PC_ST; + else + val &= ~K210_PC_ST; + break; + case PIN_CONFIG_OUTPUT: + k210_pc_pinmux_set(dev, pin_selector, K210_PCF_CONSTANT); + val = readl(&priv->fpioa->pins[pin_selector]); + val |= K210_PC_MODE_OUT; + + if (!argument) + val |= K210_PC_DO_INV; + break; + case PIN_CONFIG_OUTPUT_ENABLE: + if (argument) + val |= K210_PC_OE; + else + val &= ~K210_PC_OE; + break; + case PIN_CONFIG_SLEW_RATE: + if (argument) + val |= K210_PC_SL; + else + val &= ~K210_PC_SL; + break; + default: + return -EINVAL; + } + + writel(val, &priv->fpioa->pins[pin_selector]); + return 0; +} + +static int k210_pc_pinconf_group_set(struct udevice *dev, + unsigned group_selector, unsigned param, + unsigned argument) +{ + struct k210_pc_priv *priv = dev_get_priv(dev); + + if (param == PIN_CONFIG_POWER_SOURCE) { + u32 bit = BIT(group_selector); + + regmap_update_bits(priv->sysctl, priv->power_offset, bit, + argument ? bit : 0); + } else { + int i, ret; + + for (i = 0; i < 6; i++) { + ret = k210_pc_pinconf_set(dev, group_selector * 6 + i, + param, argument); + if (ret) + return ret; + } + } + + return 0; +} + +static int k210_pc_get_pin_muxing(struct udevice *dev, unsigned int selector, + char *buf, int size) +{ + struct k210_pc_priv *priv = dev_get_priv(dev); + u32 val = readl(&priv->fpioa->pins[selector]); + const struct k210_pcf_info *info = &k210_pcf_infos[val & K210_PCF_MASK]; + + strncpy(buf, info->name, min((size_t)size, sizeof(info->name))); + return 0; +} + +static const struct pinconf_param k210_pc_pinconf_params[] = { + { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, + { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 }, + { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, + { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, U32_MAX }, + { "drive-strength-ua", PIN_CONFIG_DRIVE_STRENGTH_UA, U32_MAX }, + { "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 }, + { "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 }, + { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 }, + { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 }, + { "power-source", PIN_CONFIG_POWER_SOURCE, K210_PC_POWER_1V8 }, + { "output-low", PIN_CONFIG_OUTPUT, 0 }, + { "output-high", PIN_CONFIG_OUTPUT, 1 }, + { "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 }, + { "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 }, + { "slew-rate", PIN_CONFIG_SLEW_RATE, 1 }, +}; + +static const struct pinctrl_ops k210_pc_pinctrl_ops = { + .get_pins_count = k210_pc_get_pins_count, + .get_pin_name = k210_pc_get_pin_name, + .get_groups_count = k210_pc_get_groups_count, + .get_group_name = k210_pc_get_group_name, + .get_functions_count = k210_pc_get_functions_count, + .get_function_name = k210_pc_get_function_name, + .pinmux_set = k210_pc_pinmux_set, + .pinconf_num_params = ARRAY_SIZE(k210_pc_pinconf_params), + .pinconf_params = k210_pc_pinconf_params, + .pinconf_set = k210_pc_pinconf_set, + .pinconf_group_set = k210_pc_pinconf_group_set, + .set_state = pinctrl_generic_set_state, + .get_pin_muxing = k210_pc_get_pin_muxing, +}; + +static int k210_pc_probe(struct udevice *dev) +{ + int ret, i, j; + struct k210_pc_priv *priv = dev_get_priv(dev); + + priv->fpioa = dev_read_addr_ptr(dev); + if (!priv->fpioa) + return -EINVAL; + + ret = clk_get_by_index(dev, 0, &priv->clk); + if (ret) + return ret; + + ret = clk_enable(&priv->clk); + if (ret && ret != -ENOSYS && ret != -ENOTSUPP) + goto err; + + priv->sysctl = syscon_regmap_lookup_by_phandle(dev, "kendryte,sysctl"); + if (IS_ERR(priv->sysctl)) { + ret = -ENODEV; + goto err; + } + + ret = dev_read_u32(dev, "kendryte,power-offset", &priv->power_offset); + if (ret) + goto err; + + log_debug("fpioa = %p sysctl = %p power offset = %x\n", priv->fpioa, + (void *)priv->sysctl->ranges[0].start, priv->power_offset); + + /* Disable all pins */ + for (i = 6; i < ARRAY_SIZE(k210_pc_pin_names); i++) + k210_pc_pinmux_set(dev, i, K210_PCF_CONSTANT); + + /* Init input ties */ + for (i = 0; i < ARRAY_SIZE(priv->fpioa->tie_en); i++) { + u32 val = 0; + + for (j = 0; j < 32; j++) + if (k210_pcf_infos[i * 32 + j].mode_id == + K210_PC_DEFAULT_IN_TIE) + val |= BIT(j); + writel(val, &priv->fpioa->tie_en[i]); + writel(val, &priv->fpioa->tie_val[i]); + } + + return 0; + +err: + clk_free(&priv->clk); + return ret; +} + +static const struct udevice_id k210_pc_ids[] = { + { .compatible = "kendryte,k210-fpioa" }, + { } +}; + +U_BOOT_DRIVER(pinctrl_k210) = { + .name = "pinctrl_k210", + .id = UCLASS_PINCTRL, + .of_match = k210_pc_ids, + .probe = k210_pc_probe, + .priv_auto_alloc_size = sizeof(struct k210_pc_priv), + .ops = &k210_pc_pinctrl_ops, +}; diff --git a/drivers/pinctrl/kendryte/pinctrl.h b/drivers/pinctrl/kendryte/pinctrl.h new file mode 100644 index 0000000000..de434700c3 --- /dev/null +++ b/drivers/pinctrl/kendryte/pinctrl.h @@ -0,0 +1,325 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> + */ + +#ifndef K210_PINCTRL_H +#define K210_PINCTRL_H + +#include <linux/bitfield.h> + +/* + * Full list of PinCtrl Functions from + * kendryte-standalone-sdk/lib/drivers/include/fpioa.h + */ +#define K210_PCF_SHIFT 0 +#define K210_PCF_MASK GENMASK(7, 0) +#define K210_PCF_JTAG_TCLK 0 /* JTAG Test Clock */ +#define K210_PCF_JTAG_TDI 1 /* JTAG Test Data In */ +#define K210_PCF_JTAG_TMS 2 /* JTAG Test Mode Select */ +#define K210_PCF_JTAG_TDO 3 /* JTAG Test Data Out */ +#define K210_PCF_SPI0_D0 4 /* SPI0 Data 0 */ +#define K210_PCF_SPI0_D1 5 /* SPI0 Data 1 */ +#define K210_PCF_SPI0_D2 6 /* SPI0 Data 2 */ +#define K210_PCF_SPI0_D3 7 /* SPI0 Data 3 */ +#define K210_PCF_SPI0_D4 8 /* SPI0 Data 4 */ +#define K210_PCF_SPI0_D5 9 /* SPI0 Data 5 */ +#define K210_PCF_SPI0_D6 10 /* SPI0 Data 6 */ +#define K210_PCF_SPI0_D7 11 /* SPI0 Data 7 */ +#define K210_PCF_SPI0_SS0 12 /* SPI0 Chip Select 0 */ +#define K210_PCF_SPI0_SS1 13 /* SPI0 Chip Select 1 */ +#define K210_PCF_SPI0_SS2 14 /* SPI0 Chip Select 2 */ +#define K210_PCF_SPI0_SS3 15 /* SPI0 Chip Select 3 */ +#define K210_PCF_SPI0_ARB 16 /* SPI0 Arbitration */ +#define K210_PCF_SPI0_SCLK 17 /* SPI0 Serial Clock */ +#define K210_PCF_UARTHS_RX 18 /* UART High speed Receiver */ +#define K210_PCF_UARTHS_TX 19 /* UART High speed Transmitter */ +#define K210_PCF_RESV6 20 /* Reserved function */ +#define K210_PCF_RESV7 21 /* Reserved function */ +#define K210_PCF_CLK_SPI1 22 /* Clock SPI1 */ +#define K210_PCF_CLK_I2C1 23 /* Clock I2C1 */ +#define K210_PCF_GPIOHS0 24 /* GPIO High speed 0 */ +#define K210_PCF_GPIOHS1 25 /* GPIO High speed 1 */ +#define K210_PCF_GPIOHS2 26 /* GPIO High speed 2 */ +#define K210_PCF_GPIOHS3 27 /* GPIO High speed 3 */ +#define K210_PCF_GPIOHS4 28 /* GPIO High speed 4 */ +#define K210_PCF_GPIOHS5 29 /* GPIO High speed 5 */ +#define K210_PCF_GPIOHS6 30 /* GPIO High speed 6 */ +#define K210_PCF_GPIOHS7 31 /* GPIO High speed 7 */ +#define K210_PCF_GPIOHS8 32 /* GPIO High speed 8 */ +#define K210_PCF_GPIOHS9 33 /* GPIO High speed 9 */ +#define K210_PCF_GPIOHS10 34 /* GPIO High speed 10 */ +#define K210_PCF_GPIOHS11 35 /* GPIO High speed 11 */ +#define K210_PCF_GPIOHS12 36 /* GPIO High speed 12 */ +#define K210_PCF_GPIOHS13 37 /* GPIO High speed 13 */ +#define K210_PCF_GPIOHS14 38 /* GPIO High speed 14 */ +#define K210_PCF_GPIOHS15 39 /* GPIO High speed 15 */ +#define K210_PCF_GPIOHS16 40 /* GPIO High speed 16 */ +#define K210_PCF_GPIOHS17 41 /* GPIO High speed 17 */ +#define K210_PCF_GPIOHS18 42 /* GPIO High speed 18 */ +#define K210_PCF_GPIOHS19 43 /* GPIO High speed 19 */ +#define K210_PCF_GPIOHS20 44 /* GPIO High speed 20 */ +#define K210_PCF_GPIOHS21 45 /* GPIO High speed 21 */ +#define K210_PCF_GPIOHS22 46 /* GPIO High speed 22 */ +#define K210_PCF_GPIOHS23 47 /* GPIO High speed 23 */ +#define K210_PCF_GPIOHS24 48 /* GPIO High speed 24 */ +#define K210_PCF_GPIOHS25 49 /* GPIO High speed 25 */ +#define K210_PCF_GPIOHS26 50 /* GPIO High speed 26 */ +#define K210_PCF_GPIOHS27 51 /* GPIO High speed 27 */ +#define K210_PCF_GPIOHS28 52 /* GPIO High speed 28 */ +#define K210_PCF_GPIOHS29 53 /* GPIO High speed 29 */ +#define K210_PCF_GPIOHS30 54 /* GPIO High speed 30 */ +#define K210_PCF_GPIOHS31 55 /* GPIO High speed 31 */ +#define K210_PCF_GPIO0 56 /* GPIO pin 0 */ +#define K210_PCF_GPIO1 57 /* GPIO pin 1 */ +#define K210_PCF_GPIO2 58 /* GPIO pin 2 */ +#define K210_PCF_GPIO3 59 /* GPIO pin 3 */ +#define K210_PCF_GPIO4 60 /* GPIO pin 4 */ +#define K210_PCF_GPIO5 61 /* GPIO pin 5 */ +#define K210_PCF_GPIO6 62 /* GPIO pin 6 */ +#define K210_PCF_GPIO7 63 /* GPIO pin 7 */ +#define K210_PCF_UART1_RX 64 /* UART1 Receiver */ +#define K210_PCF_UART1_TX 65 /* UART1 Transmitter */ +#define K210_PCF_UART2_RX 66 /* UART2 Receiver */ +#define K210_PCF_UART2_TX 67 /* UART2 Transmitter */ +#define K210_PCF_UART3_RX 68 /* UART3 Receiver */ +#define K210_PCF_UART3_TX 69 /* UART3 Transmitter */ +#define K210_PCF_SPI1_D0 70 /* SPI1 Data 0 */ +#define K210_PCF_SPI1_D1 71 /* SPI1 Data 1 */ +#define K210_PCF_SPI1_D2 72 /* SPI1 Data 2 */ +#define K210_PCF_SPI1_D3 73 /* SPI1 Data 3 */ +#define K210_PCF_SPI1_D4 74 /* SPI1 Data 4 */ +#define K210_PCF_SPI1_D5 75 /* SPI1 Data 5 */ +#define K210_PCF_SPI1_D6 76 /* SPI1 Data 6 */ +#define K210_PCF_SPI1_D7 77 /* SPI1 Data 7 */ +#define K210_PCF_SPI1_SS0 78 /* SPI1 Chip Select 0 */ +#define K210_PCF_SPI1_SS1 79 /* SPI1 Chip Select 1 */ +#define K210_PCF_SPI1_SS2 80 /* SPI1 Chip Select 2 */ +#define K210_PCF_SPI1_SS3 81 /* SPI1 Chip Select 3 */ +#define K210_PCF_SPI1_ARB 82 /* SPI1 Arbitration */ +#define K210_PCF_SPI1_SCLK 83 /* SPI1 Serial Clock */ +#define K210_PCF_SPI2_D0 84 /* SPI2 Data 0 */ +#define K210_PCF_SPI2_SS 85 /* SPI2 Select */ +#define K210_PCF_SPI2_SCLK 86 /* SPI2 Serial Clock */ +#define K210_PCF_I2S0_MCLK 87 /* I2S0 Master Clock */ +#define K210_PCF_I2S0_SCLK 88 /* I2S0 Serial Clock(BCLK) */ +#define K210_PCF_I2S0_WS 89 /* I2S0 Word Select(LRCLK) */ +#define K210_PCF_I2S0_IN_D0 90 /* I2S0 Serial Data Input 0 */ +#define K210_PCF_I2S0_IN_D1 91 /* I2S0 Serial Data Input 1 */ +#define K210_PCF_I2S0_IN_D2 92 /* I2S0 Serial Data Input 2 */ +#define K210_PCF_I2S0_IN_D3 93 /* I2S0 Serial Data Input 3 */ +#define K210_PCF_I2S0_OUT_D0 94 /* I2S0 Serial Data Output 0 */ +#define K210_PCF_I2S0_OUT_D1 95 /* I2S0 Serial Data Output 1 */ +#define K210_PCF_I2S0_OUT_D2 96 /* I2S0 Serial Data Output 2 */ +#define K210_PCF_I2S0_OUT_D3 97 /* I2S0 Serial Data Output 3 */ +#define K210_PCF_I2S1_MCLK 98 /* I2S1 Master Clock */ +#define K210_PCF_I2S1_SCLK 99 /* I2S1 Serial Clock(BCLK) */ +#define K210_PCF_I2S1_WS 100 /* I2S1 Word Select(LRCLK) */ +#define K210_PCF_I2S1_IN_D0 101 /* I2S1 Serial Data Input 0 */ +#define K210_PCF_I2S1_IN_D1 102 /* I2S1 Serial Data Input 1 */ +#define K210_PCF_I2S1_IN_D2 103 /* I2S1 Serial Data Input 2 */ +#define K210_PCF_I2S1_IN_D3 104 /* I2S1 Serial Data Input 3 */ +#define K210_PCF_I2S1_OUT_D0 105 /* I2S1 Serial Data Output 0 */ +#define K210_PCF_I2S1_OUT_D1 106 /* I2S1 Serial Data Output 1 */ +#define K210_PCF_I2S1_OUT_D2 107 /* I2S1 Serial Data Output 2 */ +#define K210_PCF_I2S1_OUT_D3 108 /* I2S1 Serial Data Output 3 */ +#define K210_PCF_I2S2_MCLK 109 /* I2S2 Master Clock */ +#define K210_PCF_I2S2_SCLK 110 /* I2S2 Serial Clock(BCLK) */ +#define K210_PCF_I2S2_WS 111 /* I2S2 Word Select(LRCLK) */ +#define K210_PCF_I2S2_IN_D0 112 /* I2S2 Serial Data Input 0 */ +#define K210_PCF_I2S2_IN_D1 113 /* I2S2 Serial Data Input 1 */ +#define K210_PCF_I2S2_IN_D2 114 /* I2S2 Serial Data Input 2 */ +#define K210_PCF_I2S2_IN_D3 115 /* I2S2 Serial Data Input 3 */ +#define K210_PCF_I2S2_OUT_D0 116 /* I2S2 Serial Data Output 0 */ +#define K210_PCF_I2S2_OUT_D1 117 /* I2S2 Serial Data Output 1 */ +#define K210_PCF_I2S2_OUT_D2 118 /* I2S2 Serial Data Output 2 */ +#define K210_PCF_I2S2_OUT_D3 119 /* I2S2 Serial Data Output 3 */ +#define K210_PCF_RESV0 120 /* Reserved function */ +#define K210_PCF_RESV1 121 /* Reserved function */ +#define K210_PCF_RESV2 122 /* Reserved function */ +#define K210_PCF_RESV3 123 /* Reserved function */ +#define K210_PCF_RESV4 124 /* Reserved function */ +#define K210_PCF_RESV5 125 /* Reserved function */ +#define K210_PCF_I2C0_SCLK 126 /* I2C0 Serial Clock */ +#define K210_PCF_I2C0_SDA 127 /* I2C0 Serial Data */ +#define K210_PCF_I2C1_SCLK 128 /* I2C1 Serial Clock */ +#define K210_PCF_I2C1_SDA 129 /* I2C1 Serial Data */ +#define K210_PCF_I2C2_SCLK 130 /* I2C2 Serial Clock */ +#define K210_PCF_I2C2_SDA 131 /* I2C2 Serial Data */ +#define K210_PCF_DVP_XCLK 132 /* DVP System Clock */ +#define K210_PCF_DVP_RST 133 /* DVP System Reset */ +#define K210_PCF_DVP_PWDN 134 /* DVP Power Down Mode */ +#define K210_PCF_DVP_VSYNC 135 /* DVP Vertical Sync */ +#define K210_PCF_DVP_HREF 136 /* DVP Horizontal Reference output */ +#define K210_PCF_DVP_PCLK 137 /* Pixel Clock */ +#define K210_PCF_DVP_D0 138 /* Data Bit 0 */ +#define K210_PCF_DVP_D1 139 /* Data Bit 1 */ +#define K210_PCF_DVP_D2 140 /* Data Bit 2 */ +#define K210_PCF_DVP_D3 141 /* Data Bit 3 */ +#define K210_PCF_DVP_D4 142 /* Data Bit 4 */ +#define K210_PCF_DVP_D5 143 /* Data Bit 5 */ +#define K210_PCF_DVP_D6 144 /* Data Bit 6 */ +#define K210_PCF_DVP_D7 145 /* Data Bit 7 */ +#define K210_PCF_SCCB_SCLK 146 /* Serial Camera Control Bus Clock */ +#define K210_PCF_SCCB_SDA 147 /* Serial Camera Control Bus Data */ +#define K210_PCF_UART1_CTS 148 /* UART1 Clear To Send */ +#define K210_PCF_UART1_DSR 149 /* UART1 Data Set Ready */ +#define K210_PCF_UART1_DCD 150 /* UART1 Data Carrier Detect */ +#define K210_PCF_UART1_RI 151 /* UART1 Ring Indicator */ +#define K210_PCF_UART1_SIR_IN 152 /* UART1 Serial Infrared Input */ +#define K210_PCF_UART1_DTR 153 /* UART1 Data Terminal Ready */ +#define K210_PCF_UART1_RTS 154 /* UART1 Request To Send */ +#define K210_PCF_UART1_OUT2 155 /* UART1 User-designated Output 2 */ +#define K210_PCF_UART1_OUT1 156 /* UART1 User-designated Output 1 */ +#define K210_PCF_UART1_SIR_OUT 157 /* UART1 Serial Infrared Output */ +#define K210_PCF_UART1_BAUD 158 /* UART1 Transmit Clock Output */ +#define K210_PCF_UART1_RE 159 /* UART1 Receiver Output Enable */ +#define K210_PCF_UART1_DE 160 /* UART1 Driver Output Enable */ +#define K210_PCF_UART1_RS485_EN 161 /* UART1 RS485 Enable */ +#define K210_PCF_UART2_CTS 162 /* UART2 Clear To Send */ +#define K210_PCF_UART2_DSR 163 /* UART2 Data Set Ready */ +#define K210_PCF_UART2_DCD 164 /* UART2 Data Carrier Detect */ +#define K210_PCF_UART2_RI 165 /* UART2 Ring Indicator */ +#define K210_PCF_UART2_SIR_IN 166 /* UART2 Serial Infrared Input */ +#define K210_PCF_UART2_DTR 167 /* UART2 Data Terminal Ready */ +#define K210_PCF_UART2_RTS 168 /* UART2 Request To Send */ +#define K210_PCF_UART2_OUT2 169 /* UART2 User-designated Output 2 */ +#define K210_PCF_UART2_OUT1 170 /* UART2 User-designated Output 1 */ +#define K210_PCF_UART2_SIR_OUT 171 /* UART2 Serial Infrared Output */ +#define K210_PCF_UART2_BAUD 172 /* UART2 Transmit Clock Output */ +#define K210_PCF_UART2_RE 173 /* UART2 Receiver Output Enable */ +#define K210_PCF_UART2_DE 174 /* UART2 Driver Output Enable */ +#define K210_PCF_UART2_RS485_EN 175 /* UART2 RS485 Enable */ +#define K210_PCF_UART3_CTS 176 /* UART3 Clear To Send */ +#define K210_PCF_UART3_DSR 177 /* UART3 Data Set Ready */ +#define K210_PCF_UART3_DCD 178 /* UART3 Data Carrier Detect */ +#define K210_PCF_UART3_RI 179 /* UART3 Ring Indicator */ +#define K210_PCF_UART3_SIR_IN 180 /* UART3 Serial Infrared Input */ +#define K210_PCF_UART3_DTR 181 /* UART3 Data Terminal Ready */ +#define K210_PCF_UART3_RTS 182 /* UART3 Request To Send */ +#define K210_PCF_UART3_OUT2 183 /* UART3 User-designated Output 2 */ +#define K210_PCF_UART3_OUT1 184 /* UART3 User-designated Output 1 */ +#define K210_PCF_UART3_SIR_OUT 185 /* UART3 Serial Infrared Output */ +#define K210_PCF_UART3_BAUD 186 /* UART3 Transmit Clock Output */ +#define K210_PCF_UART3_RE 187 /* UART3 Receiver Output Enable */ +#define K210_PCF_UART3_DE 188 /* UART3 Driver Output Enable */ +#define K210_PCF_UART3_RS485_EN 189 /* UART3 RS485 Enable */ +#define K210_PCF_TIMER0_TOGGLE1 190 /* TIMER0 Toggle Output 1 */ +#define K210_PCF_TIMER0_TOGGLE2 191 /* TIMER0 Toggle Output 2 */ +#define K210_PCF_TIMER0_TOGGLE3 192 /* TIMER0 Toggle Output 3 */ +#define K210_PCF_TIMER0_TOGGLE4 193 /* TIMER0 Toggle Output 4 */ +#define K210_PCF_TIMER1_TOGGLE1 194 /* TIMER1 Toggle Output 1 */ +#define K210_PCF_TIMER1_TOGGLE2 195 /* TIMER1 Toggle Output 2 */ +#define K210_PCF_TIMER1_TOGGLE3 196 /* TIMER1 Toggle Output 3 */ +#define K210_PCF_TIMER1_TOGGLE4 197 /* TIMER1 Toggle Output 4 */ +#define K210_PCF_TIMER2_TOGGLE1 198 /* TIMER2 Toggle Output 1 */ +#define K210_PCF_TIMER2_TOGGLE2 199 /* TIMER2 Toggle Output 2 */ +#define K210_PCF_TIMER2_TOGGLE3 200 /* TIMER2 Toggle Output 3 */ +#define K210_PCF_TIMER2_TOGGLE4 201 /* TIMER2 Toggle Output 4 */ +#define K210_PCF_CLK_SPI2 202 /* Clock SPI2 */ +#define K210_PCF_CLK_I2C2 203 /* Clock I2C2 */ +#define K210_PCF_INTERNAL0 204 /* Internal function signal 0 */ +#define K210_PCF_INTERNAL1 205 /* Internal function signal 1 */ +#define K210_PCF_INTERNAL2 206 /* Internal function signal 2 */ +#define K210_PCF_INTERNAL3 207 /* Internal function signal 3 */ +#define K210_PCF_INTERNAL4 208 /* Internal function signal 4 */ +#define K210_PCF_INTERNAL5 209 /* Internal function signal 5 */ +#define K210_PCF_INTERNAL6 210 /* Internal function signal 6 */ +#define K210_PCF_INTERNAL7 211 /* Internal function signal 7 */ +#define K210_PCF_INTERNAL8 212 /* Internal function signal 8 */ +#define K210_PCF_INTERNAL9 213 /* Internal function signal 9 */ +#define K210_PCF_INTERNAL10 214 /* Internal function signal 10 */ +#define K210_PCF_INTERNAL11 215 /* Internal function signal 11 */ +#define K210_PCF_INTERNAL12 216 /* Internal function signal 12 */ +#define K210_PCF_INTERNAL13 217 /* Internal function signal 13 */ +#define K210_PCF_INTERNAL14 218 /* Internal function signal 14 */ +#define K210_PCF_INTERNAL15 219 /* Internal function signal 15 */ +#define K210_PCF_INTERNAL16 220 /* Internal function signal 16 */ +#define K210_PCF_INTERNAL17 221 /* Internal function signal 17 */ +#define K210_PCF_CONSTANT 222 /* Constant function */ +#define K210_PCF_INTERNAL18 223 /* Internal function signal 18 */ +#define K210_PCF_DEBUG0 224 /* Debug function 0 */ +#define K210_PCF_DEBUG1 225 /* Debug function 1 */ +#define K210_PCF_DEBUG2 226 /* Debug function 2 */ +#define K210_PCF_DEBUG3 227 /* Debug function 3 */ +#define K210_PCF_DEBUG4 228 /* Debug function 4 */ +#define K210_PCF_DEBUG5 229 /* Debug function 5 */ +#define K210_PCF_DEBUG6 230 /* Debug function 6 */ +#define K210_PCF_DEBUG7 231 /* Debug function 7 */ +#define K210_PCF_DEBUG8 232 /* Debug function 8 */ +#define K210_PCF_DEBUG9 233 /* Debug function 9 */ +#define K210_PCF_DEBUG10 234 /* Debug function 10 */ +#define K210_PCF_DEBUG11 235 /* Debug function 11 */ +#define K210_PCF_DEBUG12 236 /* Debug function 12 */ +#define K210_PCF_DEBUG13 237 /* Debug function 13 */ +#define K210_PCF_DEBUG14 238 /* Debug function 14 */ +#define K210_PCF_DEBUG15 239 /* Debug function 15 */ +#define K210_PCF_DEBUG16 240 /* Debug function 16 */ +#define K210_PCF_DEBUG17 241 /* Debug function 17 */ +#define K210_PCF_DEBUG18 242 /* Debug function 18 */ +#define K210_PCF_DEBUG19 243 /* Debug function 19 */ +#define K210_PCF_DEBUG20 244 /* Debug function 20 */ +#define K210_PCF_DEBUG21 245 /* Debug function 21 */ +#define K210_PCF_DEBUG22 246 /* Debug function 22 */ +#define K210_PCF_DEBUG23 247 /* Debug function 23 */ +#define K210_PCF_DEBUG24 248 /* Debug function 24 */ +#define K210_PCF_DEBUG25 249 /* Debug function 25 */ +#define K210_PCF_DEBUG26 250 /* Debug function 26 */ +#define K210_PCF_DEBUG27 251 /* Debug function 27 */ +#define K210_PCF_DEBUG28 252 /* Debug function 28 */ +#define K210_PCF_DEBUG29 253 /* Debug function 29 */ +#define K210_PCF_DEBUG30 254 /* Debug function 30 */ +#define K210_PCF_DEBUG31 255 /* Debug function 31 */ + +/* + * The K210 only implements 8 drive levels, even though there is register space + * for 16 + */ +#define K210_PC_DRIVE_SHIFT 8 +#define K210_PC_DRIVE_MASK GENMASK(11, 8) +#define K210_PC_DRIVE_0 (0 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_1 (1 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_2 (2 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_3 (3 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_4 (4 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_5 (5 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_6 (6 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_7 (7 << K210_PC_DRIVE_SHIFT) +#define K210_PC_DRIVE_MAX 7 + +#define K210_PC_MODE_MASK GENMASK(23, 12) +/* + * output enabled == PC_OE & (PC_OE_INV ^ FUNCTION_OE) where FUNCTION_OE is a + * physical signal from the function + */ +#define K210_PC_OE BIT(12) /* Output Enable */ +#define K210_PC_OE_INV BIT(13) /* INVert function-controlled Output Enable */ +#define K210_PC_DO_OE BIT(14) /* set Data Out to the Output Enable signal */ +#define K210_PC_DO_INV BIT(15) /* INVert final Data Output */ +#define K210_PC_PU BIT(16) /* Pull Up */ +#define K210_PC_PD BIT(17) /* Pull Down */ +/* Strong pull up not implemented on K210 */ +#define K210_PC_SL BIT(19) /* reduce SLew rate to prevent overshoot */ +/* Same semantics as OE above */ +#define K210_PC_IE BIT(20) /* Input Enable */ +#define K210_PC_IE_INV BIT(21) /* INVert function-controlled Input Enable */ +#define K210_PC_DI_INV BIT(22) /* INVert Data Input */ +#define K210_PC_ST BIT(23) /* Schmitt Trigger */ +#define K210_PC_DI BIT(31) /* raw Data Input */ +#define K210_PC_BIAS_MASK (K210_PC_PU & K210_PC_PD) + +#define K210_PC_MODE_IN (K210_PC_IE | K210_PC_ST) +#define K210_PC_MODE_OUT (K210_PC_DRIVE_7 | K210_PC_OE) +#define K210_PC_MODE_I2C (K210_PC_MODE_IN | K210_PC_IE_INV | K210_PC_SL | \ + K210_PC_OE | K210_PC_OE_INV | K210_PC_PU) +#define K210_PC_MODE_SPI (K210_PC_MODE_IN | K210_PC_IE_INV | \ + K210_PC_MODE_OUT | K210_PC_OE_INV) +#define K210_PC_MODE_GPIO (K210_PC_MODE_IN | K210_PC_MODE_OUT) + +struct k210_fpioa { + u32 pins[48]; + u32 tie_en[8]; + u32 tie_val[8]; +}; + +#endif /* K210_PINCTRL_H */ diff --git a/include/dt-bindings/pinctrl/k210-pinctrl.h b/include/dt-bindings/pinctrl/k210-pinctrl.h new file mode 100644 index 0000000000..6d44ea765b --- /dev/null +++ b/include/dt-bindings/pinctrl/k210-pinctrl.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2020 Sean Anderson <seanga2 at gmail.com> + */ + +#ifndef DT_K210_PINCTRL_H +#define DT_K210_PINCTRL_H + +#define K210_PC_POWER_3V3 0 +#define K210_PC_POWER_1V8 1 + +#endif /* DT_K210_PINCTRL_H */
The Fully-Programmable Input/Output Array (FPIOA) device controls pin multiplexing on the K210. The FPIOA can remap any supported function to any multifunctional IO pin. It can also perform basic GPIO functions, such as reading the current value of a pin. Signed-off-by: Sean Anderson <seanga2 at gmail.com> --- Changes in v5: - New MAINTAINERS | 2 + .../pinctrl/kendryte,k210-fpioa.txt | 116 +++ drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/kendryte/Kconfig | 7 + drivers/pinctrl/kendryte/Makefile | 1 + drivers/pinctrl/kendryte/pinctrl.c | 663 ++++++++++++++++++ drivers/pinctrl/kendryte/pinctrl.h | 325 +++++++++ include/dt-bindings/pinctrl/k210-pinctrl.h | 12 + 9 files changed, 1128 insertions(+) create mode 100644 doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt create mode 100644 drivers/pinctrl/kendryte/Kconfig create mode 100644 drivers/pinctrl/kendryte/Makefile create mode 100644 drivers/pinctrl/kendryte/pinctrl.c create mode 100644 drivers/pinctrl/kendryte/pinctrl.h create mode 100644 include/dt-bindings/pinctrl/k210-pinctrl.h