arm64: dts: rockchip: add micro SD card regulator to rockpro64

This patch adds the RockPro64's micro SD card regulator to the
RockPro64 dtsi. The regulator is present on all revisions of the
device.
Previously the regular was missing, resulting in unreliable boot
behaviour when booting from SD card.
Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
Link: https://lore.kernel.org/r/20200416145534.1263575-1-t.schramm@manjaro.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi

@@ -96,6 +96,24 @@ vcc1v8_s3: vcca1v8_s3: vcc1v8-s3 {
 		vin-supply = <&vcc_1v8>;
 	};
 
+	/* micro SD card power */
+	vcc3v0_sd: vcc3v0-sd {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdmmc0_pwr_h>;
+		regulator-name = "vcc3v0_sd";
+		regulator-always-on;
+		regulator-min-microvolt = <3000000>;
+		regulator-max-microvolt = <3000000>;
+		vin-supply = <&vcc3v3_sys>;
+
+		regulator-state-mem {
+			regulator-off-in-suspend;
+		};
+	};
+
 	vcc3v3_pcie: vcc3v3-pcie-regulator {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -603,6 +621,13 @@ vsel2_gpio: vsel2-gpio {
 		};
 	};
 
+	sdcard {
+		sdmmc0_pwr_h: sdmmc0-pwr-h {
+			rockchip,pins = <0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+	};
+
 	sdio-pwrseq {
 		wifi_enable_h: wifi-enable-h {
 			rockchip,pins = <0 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
@@ -661,6 +686,8 @@ &sdmmc {
 	max-frequency = <150000000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_bus4>;
+	vmmc-supply = <&vcc3v0_sd>;
+	vqmmc-supply = <&vcc_sdio>;
 	status = "okay";
 };