| Message ID | 20241016-02-k1-pinctrl-v5-3-03d395222e4f@gentoo.org |
|---|---|
| State | New |
| Headers | show |
| Series | riscv: spacemit: add pinctrl support to K1 SoC | expand |
diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 023274189b492598b312d27609051a855c021d40..bc88d4de25a621f1baa5b2b96cfa0083144847af 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -4,6 +4,7 @@ */ #include "k1.dtsi" +#include "k1-pinctrl.dtsi" / { model = "Banana Pi BPI-F3"; @@ -15,5 +16,7 @@ chosen { }; &uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_2_cfg>; status = "okay"; }; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi new file mode 100644 index 0000000000000000000000000000000000000000..a8eac5517f8578d60cb45214589ccb45ac376b9a --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright (c) 2024 Yixun Lan <dlan@gentoo.org> + */ + +#include <dt-bindings/gpio/gpio.h> + +#define K1_PADCONF(pin, func) (((pin) << 16) | (func)) + +&pinctrl { + uart0_2_cfg: uart0-2-cfg { + uart0-2-pins { + pinmux = <K1_PADCONF(68, 2)>, + <K1_PADCONF(69, 2)>; + + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; +}; diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 0777bf9e01183f34c1eb82525418fe1a660b25a9..a2d5f7d4a942af26b3ba991928f23b2d9943366a 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -416,6 +416,11 @@ uart9: serial@d4017800 { status = "disabled"; }; + pinctrl: pinctrl@d401e000 { + compatible = "spacemit,k1-pinctrl"; + reg = <0x0 0xd401e000 0x0 0x400>; + }; + plic: interrupt-controller@e0000000 { compatible = "spacemit,k1-plic", "sifive,plic-1.0.0"; reg = <0x0 0xe0000000 0x0 0x4000000>;
Before pinctrl driver implemented, the uart0 controller reply on bootloader for setting correct pin mux and configurations. Now, let's add pinctrl property to uart0 of Bananapi-F3 board. Signed-off-by: Yixun Lan <dlan@gentoo.org> --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 3 +++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 ++++++++++++++++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 5 +++++ 3 files changed, 28 insertions(+)