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arm: dts: owl-s500-roseapplepi: Add uSD support

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

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
This commit is contained in:
Cristian Ciocaltea 2020-12-29 23:17:26 +02:00 committed by Manivannan Sadhasivam
parent 3f435fba46
commit 8e23902d12
1 changed files with 50 additions and 0 deletions
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50
arch/arm/boot/dts/owl-s500-roseapplepi.dts
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@ -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 {