ARM: dts: rockchip: Add vcc50_hdmi for rk3288-vyasa

Add vcc50_hdmi regulator for Vyasa RK3288 board.

VCC50_HDMI is the real name used for this regulator as
per the schematics.

This regulator used for HDMI connector by detecting the
cable via HDMI_EN gpio and input rails are sourced from
VSUS_5V regulator.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20200123134641.30720-3-jagan@amarulasolutions.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-vyasa.dts

@@ -78,6 +78,18 @@ vsus_5v: vsus-5v {
 		vin-supply = <&vcc_io>;
 	};
 
+	vcc50_hdmi: vcc50-hdmi {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc50_hdmi";
+		enable-active-high;
+		gpio = <&gpio7 RK_PB4 GPIO_ACTIVE_HIGH>; /* HDMI_EN */
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc50_hdmi_en>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vsus_5v>;
+	};
+
 	vusb1_5v: vusb1-5v {
 		compatible = "regulator-fixed";
 		regulator-name = "vusb1_5v";
@@ -446,6 +458,12 @@ phy_rst: phy-rst {
 		};
 	};
 
+	hdmi {
+		vcc50_hdmi_en: vcc50-hdmi-en {
+			rockchip,pins = <7 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	pmic {
 		pmic_int: pmic-int {
 			rockchip,pins = <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_up>;