arm64: dts: rockchip: Enable SD-card interface on Radxa E20C

SD-card is available on Radxa E20C board.

Signed-off-by: Yao Zi <ziyao@disroot.org>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250508234829.27111-4-ziyao@disroot.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
index 0942baba6b8fe164a2da23b3866327e17567b226..d45b6594b2dec090e684386e1dac151ca13fa64d 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -18,6 +18,7 @@
 
        aliases {
                mmc0 = &sdhci;
+               mmc1 = &sdmmc;
        };
 
        chosen {
@@ -130,6 +131,18 @@
                regulator-max-microvolt = <5000000>;
        };
 
+       vccio_sd: regulator-vccio-sd {
+               compatible = "regulator-gpio";
+               gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&sdmmc_vol_ctrl_h>;
+               regulator-name = "vccio_sd";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+               states = <1800000 0x0>, <3300000 0x1>;
+               vin-supply = <&vcc5v0_sys>;
+       };
+
        vdd_arm: regulator-vdd-arm {
                compatible = "pwm-regulator";
                pwms = <&pwm1 0 5000 PWM_POLARITY_INVERTED>;
@@ -205,6 +218,12 @@
                        rockchip,pins = <4 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
+
+       sdmmc {
+               sdmmc_vol_ctrl_h: sdmmc-vol-ctrl-h {
+                       rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
 };
 
 &pwm1 {
@@ -235,6 +254,17 @@
        status = "okay";
 };
 
+&sdmmc {
+       bus-width = <4>;
+       cap-mmc-highspeed;
+       cap-sd-highspeed;
+       disable-wp;
+       sd-uhs-sdr104;
+       vmmc-supply = <&vcc_3v3>;
+       vqmmc-supply = <&vccio_sd>;
+       status = "okay";
+};
+
 &uart0 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart0m0_xfer>;