arm64: dts: mediatek: cherry: Enable Elantech eKTH3000 i2c trackpad

The Cherry platform uses an Elantech touchpad/trackpad: enable
probing it at address 0x15 on I2C1.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220902081156.38526-7-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 0654a28e67822b07f233a8d06c9da3808f805ef9..ee59619068d9794f687afae1b29a5eebf3fd9f32 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -134,6 +134,16 @@
        i2c-scl-internal-delay-ns = <12500>;
        pinctrl-names = "default";
        pinctrl-0 = <&i2c1_pins>;
+
+       trackpad@15 {
+               compatible = "elan,ekth3000";
+               reg = <0x15>;
+               interrupts-extended = <&pio 6 IRQ_TYPE_LEVEL_LOW>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&trackpad_pins>;
+               vcc-supply = <&pp3300_s3>;
+               wakeup-source;
+       };
 };
 
 &i2c2 {
@@ -710,6 +720,14 @@
                };
        };
 
+       trackpad_pins: trackpad-default-pins {
+               pins-int-n {
+                       pinmux = <PINMUX_GPIO6__FUNC_GPIO6>;
+                       input-enable;
+                       bias-pull-up;
+               };
+       };
+
        touchscreen_pins: touchscreen-default-pins {
                pins-int-n {
                        pinmux = <PINMUX_GPIO92__FUNC_GPIO92>;