[PATCH 3/4] arm64: dts: qcom: msm8916-samsung-a2015: Add touchscreen regulator

[Stephan Gerhold <stephan@gerhold.net>]

A3U and A5U both use an extra touchscreen LDO regulator
that provides 3.3V for the touch screen controller.

Add it as fixed regulator to the common include.

Cc: Michael Srba <Michael.Srba@seznam.cz>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../qcom/msm8916-samsung-a2015-common.dtsi    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index 43c5e0f882f1..67a286422a13 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -138,6 +138,19 @@ hall-sensor {
 		};
 	};
 
+	reg_vdd_tsp: regulator-vdd-tsp {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_tsp";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&msmgpio 73 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsp_en_default>;
+	};
+
 	i2c-muic {
 		compatible = "i2c-gpio";
 		sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -195,6 +208,18 @@ pinconf {
 			bias-disable;
 		};
 	};
+
+	tsp_en_default: tsp_en_default {
+		pinmux {
+			function = "gpio";
+			pins = "gpio73";
+		};
+		pinconf {
+			pins = "gpio73";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
 };
 
 &smd_rpm_regulators {
-- 
2.26.2