arm64: dts: qcom: msm8916-samsung-a5u: Add touch key regulator

On the Samsung Galaxy A5 the touch key is supplied by a single fixed
regulator (enabled via GPIO 97) that supplies both MCU and LED.
Add it to the device tree.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210604172742.10593-3-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts
index dd35c33..c2eff5a 100644 (file)
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts
@@ -7,6 +7,19 @@
 / {
        model = "Samsung Galaxy A5U (EUR)";
        compatible = "samsung,a5u-eur", "qcom,msm8916";
+
+       reg_touch_key: regulator-touch-key {
+               compatible = "regulator-fixed";
+               regulator-name = "touch_key";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&msmgpio 97 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&tkey_en_default>;
+       };
 };
 
 &accelerometer {
@@ -42,7 +55,20 @@
        };
 };
 
+&touchkey {
+       vcc-supply = <&reg_touch_key>;
+       vdd-supply = <&reg_touch_key>;
+};
+
 &msmgpio {
+       tkey_en_default: tkey-en-default {
+               pins = "gpio97";
+               function = "gpio";
+
+               drive-strength = <2>;
+               bias-disable;
+       };
+
        ts_int_default: ts-int-default {
                pins = "gpio13";
                function = "gpio";