[PATCH v3 1/2] arm64: dts: qcom: qcs6490-rubikpi3: Add 3.3 V output supply

[Hongyang Zhao <hongyang.zhao@thundersoft.com>]

Describe the GPIO-controlled VCC3V3_OUTPUT rail. This board-level rail
supplies the two camera connectors and the 40-pin expansion header.

Keep the rail enabled because expansion-header consumers are not
represented in the Device Tree.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Hongyang Zhao <hongyang.zhao@thundersoft.com>
---
 .../boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
index 13e8e62f6205..0f21777c480b 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
@@ -214,6 +214,22 @@ vreg_usbhub_rest_1v8: regulator-usbhub-rest-1v8 {
 		regulator-boot-on;
 	};
 
+	vreg_vcc3v3_output: regulator-vcc3v3-output {
+		compatible = "regulator-fixed";
+
+		regulator-name = "vcc3v3_output";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 14 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&vcc3v3_output_en>;
+		pinctrl-names = "default";
+
+		regulator-always-on;
+	};
+
 	vph_pwr: regulator-vph-pwr {
 		compatible = "regulator-fixed";
 
@@ -1251,6 +1267,13 @@ usb_eth_power: usb-eth-power-state {
 		bias-disable;
 	};
 
+	vcc3v3_output_en: vcc3v3-output-en-state {
+		pins = "gpio14";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
+
 	wifi_reset_active: wifi-reset-active-state {
 		pins = "gpio16";
 		function = "gpio";

-- 
2.43.0