[PATCH 4/7] ARM: dts: exynos: k3g: Add touchkeys support

Markuss Broks
2023-07-16T22:08:41Z

This device has touch keys that are compatible with those
installed on Samsung TM2 dev board.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
---
arch/arm/boot/dts/exynos5422-samsung-k3g.dts | 32 ++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
index 582faedd6aab..b3576a745054 100644
--- a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
+++ b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
@@ -104,6 +104,33 @@ battery@36 {
};
};

+ i2c-touchkey {
+ compatible = "i2c-gpio";
+
+ sda-gpios = <&gpd1 4 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&gpd1 5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ i2c-gpio,delay-us = <2>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchkey@20 {
+ compatible = "cypress,tm2-touchkey";
+ reg = <0x20>;
+
+ interrupt-parent = <&gpy7>;
+ interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&touchkey_irq>;
+
+ vcc-supply = <&ldo38_reg>;
+ vdd-supply = <&ldo30_reg>;
+
+ linux,keycodes = <KEY_APPSELECT KEY_BACK>;
+ };
+ };
+
tsp_vdd: regulator-tsp-vdd-en {
compatible = "regulator-fixed";
regulator-name = "tsp_vdd_en";
@@ -742,6 +769,11 @@ power_gpio: power-key-pins {
samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
};

+ touchkey_irq: touchkey-irq-pins {
+ samsung,pins = "gpy7-1";
+ samsung,pin-pud = <EXYNOS_PIN_PULL_DOWN>;
+ };
+
wlan_reset: wlan-reset {
samsung,pins = "gpy7-7";
samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
--
2.41.0