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f3daa7e6e2
Convert the Samsung SoC SDHCI Controller bindings to DT schema. The original bindings were quite old and incomplete, so add during conversion typical (already used) properties like reg, clocks, interrupts. The bindings were not precising the clocks, although the upstream DTS and Linux driver were expecting bus clocks in certain patterns in any order. Document the status quo even though it is not a proper approach for bindings. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220626120342.38851-6-krzysztof.kozlowski@linaro.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
81 lines
1.8 KiB
YAML
81 lines
1.8 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mmc/samsung,s3c6410-sdhci.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung SoC SDHCI Controller
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maintainers:
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- Jaehoon Chung <jh80.chung@samsung.com>
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- Krzysztof Kozlowski <krzk@kernel.org>
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properties:
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compatible:
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enum:
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- samsung,s3c6410-sdhci
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- samsung,exynos4210-sdhci
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reg:
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maxItems: 1
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clocks:
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minItems: 2
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maxItems: 5
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clock-names:
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minItems: 2
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items:
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- const: hsmmc
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- pattern: "^mmc_busclk.[0-3]$"
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- pattern: "^mmc_busclk.[0-3]$"
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- pattern: "^mmc_busclk.[0-3]$"
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- pattern: "^mmc_busclk.[0-3]$"
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interrupts:
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maxItems: 1
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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allOf:
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- $ref: mmc-controller.yaml#
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- if:
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properties:
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compatible:
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contains:
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enum:
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- samsung,exynos4210-sdhci
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then:
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properties:
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clocks:
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maxItems: 2
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clock-names:
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items:
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- const: hsmmc
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- const: mmc_busclk.2
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/clock/exynos4.h>
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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mmc@12510000 {
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compatible = "samsung,exynos4210-sdhci";
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reg = <0x12510000 0x100>;
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interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clock CLK_SDMMC0>, <&clock CLK_SCLK_MMC0>;
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clock-names = "hsmmc", "mmc_busclk.2";
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bus-width = <4>;
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cd-gpios = <&gpx3 4 GPIO_ACTIVE_LOW>;
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pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_bus4 &sdhci2_cd>;
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pinctrl-names = "default";
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vmmc-supply = <&ldo21_reg>;
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};
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