@@ -91,6 +91,32 @@ reg_vdd_tsp: regulator-vdd-tsp {
pinctrl-0 = <&tsp_en_default>;
};
+ reg_touch_key: regulator-touch-key {
+ compatible = "regulator-fixed";
+ regulator-name = "touch_key";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+
+ gpio = <&msmgpio 86 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&tkey_en_default>;
+ };
+
+ reg_key_led: regulator-key-led {
+ compatible = "regulator-fixed";
+ regulator-name = "key_led";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpio = <&msmgpio 60 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&tkey_led_en_default>;
+ };
+
i2c-muic {
compatible = "i2c-gpio";
sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -113,6 +139,35 @@ muic: extcon@14 {
pinctrl-0 = <&muic_irq_default>;
};
};
+
+ i2c-tkey {
+ compatible = "i2c-gpio";
+ sda-gpios = <&msmgpio 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&msmgpio 17 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&tkey_i2c_default>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchkey@20 {
+ compatible = "coreriver,tc360-touchkey";
+ reg = <0x20>;
+
+ interrupt-parent = <&msmgpio>;
+ interrupts = <98 IRQ_TYPE_EDGE_FALLING>;
+
+ vcc-supply = <®_touch_key>;
+ vdd-supply = <®_key_led>;
+ vddio-supply = <&pm8916_l6>;
+
+ linux,keycodes = <KEY_APPSELECT KEY_BACK>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&tkey_default>;
+ };
+ };
};
&blsp_i2c5 {
@@ -333,6 +388,38 @@ muic_irq_default: muic-irq-default {
bias-disable;
};
+ tkey_default: tkey-default {
+ pins = "gpio98";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ tkey_en_default: tkey-en-default {
+ pins = "gpio86";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ tkey_i2c_default: tkey-i2c-default {
+ pins = "gpio16", "gpio17";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ tkey_led_en_default: tkey-led-en-default {
+ pins = "gpio60";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
tsp_en_default: tsp-en-default {
pins = "gpio73";
function = "gpio";
Add the CORERIVER TC360 touch key together with the two necessary fixed regulators for it. Note that for some reason Samsung decided to connect this to GPIOs where no hardware I2C bus is available, so we need to fall back to software bit-banging using i2c-gpio. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> --- .../dts/qcom/msm8916-samsung-serranove.dts | 87 +++++++++++++++++++ 1 file changed, 87 insertions(+)