dt-bindings: mmc: tegra: Add pad voltage control properties (3700cdf8) · Commits · 戴 / test

Document the pinctrl bindings used by the SDHCI driver to reconfigure pad voltages on controllers supporting multiple voltage levels. Signed-off-by:

Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt

+22 −0

Original line number	Diff line number	Diff line
		@@ -38,3 +38,25 @@ sdhci@c8000200 {
		power-gpios = <&gpio 155 0>; /* gpio PT3 */
		bus-width = <8>;
		};

		Optional properties for Tegra210 and Tegra186:
		- pinctrl-names, pinctrl-0, pinctrl-1 : Specify pad voltage
		configurations. Valid pinctrl-names are "sdmmc-3v3" and "sdmmc-1v8"
		for controllers supporting multiple voltage levels. The order of names
		should correspond to the pin configuration states in pinctrl-0 and
		pinctrl-1.

		Example:
		sdhci@700b0000 {
		compatible = "nvidia,tegra210-sdhci", "nvidia,tegra124-sdhci";
		reg = <0x0 0x700b0000 0x0 0x200>;
		interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
		clocks = <&tegra_car TEGRA210_CLK_SDMMC1>;
		clock-names = "sdhci";
		resets = <&tegra_car 14>;
		reset-names = "sdhci";
		pinctrl-names = "sdmmc-3v3", "sdmmc-1v8";
		pinctrl-0 = <&sdmmc1_3v3>;
		pinctrl-1 = <&sdmmc1_1v8>;
		status = "disabled";
		};