Commit 8e23902d authored by Cristian Ciocaltea's avatar Cristian Ciocaltea Committed by Manivannan Sadhasivam
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arm: dts: owl-s500-roseapplepi: Add uSD support 



Add uSD support for RoseapplePi SBC using a fixed regulator as a
temporary solution until PMIC support becomes available.

Signed-off-by: default avatarCristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
parent 3f435fba

arch/arm/boot/dts/owl-s500-roseapplepi.dts

+50 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ / { 
	model = "Roseapple Pi";



	aliases {

		mmc0 = &mmc0;

		serial2 = &uart2;

	};
@@ -25,6 +26,55 @@ memory@0 { 
		device_type = "memory";

		reg = <0x0 0x80000000>; /* 2GB */

	};



	/* Fixed regulator used in the absence of PMIC */

	sd_vcc: sd-vcc {

		compatible = "regulator-fixed";

		regulator-name = "fixed-3.1V";

		regulator-min-microvolt = <3100000>;

		regulator-max-microvolt = <3100000>;

		regulator-always-on;

	};

};



&pinctrl {

	mmc0_pins: mmc0-pins {

		pinmux {

			groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",

				 "sd0_cmd_mfp", "sd0_clk_mfp";

			function = "sd0";

		};



		drv-pinconf {

			groups = "sd0_d0_d3_drv", "sd0_cmd_drv", "sd0_clk_drv";

			drive-strength = <8>;

		};



		bias0-pinconf {

			pins = "sd0_d0", "sd0_d1", "sd0_d2",

			       "sd0_d3", "sd0_cmd";

			bias-pull-up;

		};



		bias1-pinconf {

			pins = "sd0_clk";

			bias-pull-down;

		};

	};

};



/* uSD */

&mmc0 {

	status = "okay";

	pinctrl-names = "default";

	pinctrl-0 = <&mmc0_pins>;

	no-sdio;

	no-mmc;

	no-1-8-v;

	cd-gpios = <&pinctrl 117 GPIO_ACTIVE_LOW>;

	bus-width = <4>;

	vmmc-supply = <&sd_vcc>;

	vqmmc-supply = <&sd_vcc>;

};



&twd_timer {