| Message ID | 20220605163710.144210-1-krzysztof.kozlowski@linaro.org |
|---|---|
| Headers | show |
| Series | mmc: samsung,exynos-dw-mshc: convert to dtschema | expand |
On Sun, 05 Jun 2022 18:37:09 +0200, Krzysztof Kozlowski wrote: > Convert the Samsung Exynos SoC specific extensions to the Synopsys > Designware Mobile Storage Host Controller to DT schema. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > --- > .../bindings/mmc/exynos-dw-mshc.txt | 94 ----------- > .../bindings/mmc/samsung,exynos-dw-mshc.yaml | 159 ++++++++++++++++++ > 2 files changed, 159 insertions(+), 94 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt > create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml > Reviewed-by: Rob Herring <robh@kernel.org>
On Sun, 5 Jun 2022 at 18:37, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote: > > Convert the Samsung Exynos SoC specific extensions to the Synopsys > Designware Mobile Storage Host Controller to DT schema. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Applied for next, thanks! Kind regards Uffe > --- > .../bindings/mmc/exynos-dw-mshc.txt | 94 ----------- > .../bindings/mmc/samsung,exynos-dw-mshc.yaml | 159 ++++++++++++++++++ > 2 files changed, 159 insertions(+), 94 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt > create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml > > diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt > deleted file mode 100644 > index 753e9d7d8956..000000000000 > --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt > +++ /dev/null > @@ -1,94 +0,0 @@ > -* Samsung Exynos specific extensions to the Synopsys Designware Mobile > - Storage Host Controller > - > -The Synopsys designware mobile storage host controller is used to interface > -a SoC with storage medium such as eMMC or SD/MMC cards. This file documents > -differences between the core Synopsys dw mshc controller properties described > -by synopsys-dw-mshc.txt and the properties used by the Samsung Exynos specific > -extensions to the Synopsys Designware Mobile Storage Host Controller. > - > -Required Properties: > - > -* compatible: should be > - - "samsung,exynos4210-dw-mshc": for controllers with Samsung Exynos4210 > - specific extensions. > - - "samsung,exynos4412-dw-mshc": for controllers with Samsung Exynos4412 > - specific extensions. > - - "samsung,exynos5250-dw-mshc": for controllers with Samsung Exynos5250 > - specific extensions. > - - "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420 > - specific extensions. > - - "samsung,exynos7-dw-mshc": for controllers with Samsung Exynos7 > - specific extensions. > - - "samsung,exynos7-dw-mshc-smu": for controllers with Samsung Exynos7 > - specific extensions having an SMU. > - - "axis,artpec8-dw-mshc": for controllers with ARTPEC-8 specific > - extensions. > - > -* samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface > - unit (ciu) clock. This property is applicable only for Exynos5 SoC's and > - ignored for Exynos4 SoC's. The valid range of divider value is 0 to 7. > - > -* samsung,dw-mshc-sdr-timing: Specifies the value of CIU clock phase shift value > - in transmit mode and CIU clock phase shift value in receive mode for single > - data rate mode operation. Refer notes below for the order of the cells and the > - valid values. > - > -* samsung,dw-mshc-ddr-timing: Specifies the value of CUI clock phase shift value > - in transmit mode and CIU clock phase shift value in receive mode for double > - data rate mode operation. Refer notes below for the order of the cells and the > - valid values. > -* samsung,dw-mshc-hs400-timing: Specifies the value of CIU TX and RX clock phase > - shift value for hs400 mode operation. > - > - Notes for the sdr-timing and ddr-timing values: > - > - The order of the cells should be > - - First Cell: CIU clock phase shift value for tx mode. > - - Second Cell: CIU clock phase shift value for rx mode. > - > - Valid values for SDR and DDR CIU clock timing for Exynos5250: > - - valid value for tx phase shift and rx phase shift is 0 to 7. > - - when CIU clock divider value is set to 3, all possible 8 phase shift > - values can be used. > - - if CIU clock divider value is 0 (that is divide by 1), both tx and rx > - phase shift clocks should be 0. > - > -* samsung,read-strobe-delay: RCLK (Data strobe) delay to control HS400 mode > - (Latency value for delay line in Read path) > - > -Required properties for a slot (Deprecated - Recommend to use one slot per host): > - > -* gpios: specifies a list of gpios used for command, clock and data bus. The > - first gpio is the command line and the second gpio is the clock line. The > - rest of the gpios (depending on the bus-width property) are the data lines in > - no particular order. The format of the gpio specifier depends on the gpio > - controller. > -(Deprecated - Refer to Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt) > - > -Example: > - > - The MSHC controller node can be split into two portions, SoC specific and > - board specific portions as listed below. > - > - dwmmc0@12200000 { > - compatible = "samsung,exynos5250-dw-mshc"; > - reg = <0x12200000 0x1000>; > - interrupts = <0 75 0>; > - #address-cells = <1>; > - #size-cells = <0>; > - }; > - > - dwmmc0@12200000 { > - cap-mmc-highspeed; > - cap-sd-highspeed; > - broken-cd; > - fifo-depth = <0x80>; > - card-detect-delay = <200>; > - samsung,dw-mshc-ciu-div = <3>; > - samsung,dw-mshc-sdr-timing = <2 3>; > - samsung,dw-mshc-ddr-timing = <1 2>; > - samsung,dw-mshc-hs400-timing = <0 2>; > - samsung,read-strobe-delay = <90>; > - bus-width = <8>; > - }; > diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml > new file mode 100644 > index 000000000000..80c557e938a2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml > @@ -0,0 +1,159 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mmc/samsung,exynos-dw-mshc.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: > + Samsung Exynos SoC specific extensions to the Synopsys Designware Mobile > + Storage Host Controller > + > +maintainers: > + - Jaehoon Chung <jh80.chung@samsung.com> > + - Krzysztof Kozlowski <krzk@kernel.org> > + > +properties: > + compatible: > + enum: > + - samsung,exynos4210-dw-mshc > + - samsung,exynos4412-dw-mshc > + - samsung,exynos5250-dw-mshc > + - samsung,exynos5420-dw-mshc > + - samsung,exynos7-dw-mshc > + - samsung,exynos7-dw-mshc-smu > + - axis,artpec8-dw-mshc > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + maxItems: 2 > + description: > + Handle to "biu" and "ciu" clocks for the > + bus interface unit clock and the card interface unit clock. > + > + clock-names: > + items: > + - const: biu > + - const: ciu > + > + samsung,dw-mshc-ciu-div: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 7 > + description: > + The divider value for the card interface unit (ciu) clock. > + > + samsung,dw-mshc-ddr-timing: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + items: > + - description: CIU clock phase shift value for tx mode > + minimum: 0 > + maximum: 7 > + - description: CIU clock phase shift value for rx mode > + minimum: 0 > + maximum: 7 > + description: > + The value of CUI clock phase shift value in transmit mode and CIU clock > + phase shift value in receive mode for double data rate mode operation. > + See also samsung,dw-mshc-hs400-timing property. > + > + samsung,dw-mshc-hs400-timing: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + items: > + - description: CIU clock phase shift value for tx mode > + minimum: 0 > + maximum: 7 > + - description: CIU clock phase shift value for rx mode > + minimum: 0 > + maximum: 7 > + description: | > + The value of CIU TX and RX clock phase shift value for HS400 mode > + operation. > + Valid values for SDR and DDR CIU clock timing:: > + - valid value for tx phase shift and rx phase shift is 0 to 7. > + - when CIU clock divider value is set to 3, all possible 8 phase shift > + values can be used. > + - if CIU clock divider value is 0 (that is divide by 1), both tx and rx > + phase shift clocks should be 0. > + If missing, values from samsung,dw-mshc-ddr-timing property are used. > + > + samsung,dw-mshc-sdr-timing: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + items: > + - description: CIU clock phase shift value for tx mode > + minimum: 0 > + maximum: 7 > + - description: CIU clock phase shift value for rx mode > + minimum: 0 > + maximum: 7 > + description: > + The value of CIU clock phase shift value in transmit mode and CIU clock > + phase shift value in receive mode for single data rate mode operation. > + See also samsung,dw-mshc-hs400-timing property. > + > + samsung,read-strobe-delay: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + RCLK (Data strobe) delay to control HS400 mode (Latency value for delay > + line in Read path). If missing, default from hardware is used. > + > +required: > + - compatible > + - reg > + - interrupts > + - clocks > + - clock-names > + - samsung,dw-mshc-ddr-timing > + - samsung,dw-mshc-sdr-timing > + > +allOf: > + - $ref: "synopsys-dw-mshc-common.yaml#" > + - if: > + properties: > + compatible: > + contains: > + enum: > + - samsung,exynos5250-dw-mshc > + - samsung,exynos5420-dw-mshc > + - samsung,exynos7-dw-mshc > + - samsung,exynos7-dw-mshc-smu > + - axis,artpec8-dw-mshc > + then: > + required: > + - samsung,dw-mshc-ciu-div > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/exynos5420.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + > + mmc@12220000 { > + compatible = "samsung,exynos5420-dw-mshc"; > + interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>; > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <0x12220000 0x1000>; > + clocks = <&clock CLK_MMC2>, <&clock CLK_SCLK_MMC2>; > + clock-names = "biu", "ciu"; > + fifo-depth = <0x40>; > + card-detect-delay = <200>; > + samsung,dw-mshc-ciu-div = <3>; > + samsung,dw-mshc-sdr-timing = <0 4>; > + samsung,dw-mshc-ddr-timing = <0 2>; > + pinctrl-names = "default"; > + pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_wp &sd2_bus1 &sd2_bus4>; > + bus-width = <4>; > + cap-sd-highspeed; > + max-frequency = <200000000>; > + vmmc-supply = <&ldo19_reg>; > + vqmmc-supply = <&ldo13_reg>; > + sd-uhs-sdr50; > + sd-uhs-sdr104; > + sd-uhs-ddr50; > + }; > -- > 2.34.1 >