arm64: dts: mediatek: asurada: Add Elan eKTH3000 I2C trackpad

Add support for the Elan eKTH3000 i2c trackpad present on Asurada. It is
connected to the I2C2 bus and has address 0x15.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220629155956.1138955-11-nfraprado@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index fe626535ee5df13d6fd554c09a85324d0a3f4a36..4de4235cb7685b1f3fb499458957db87664772e2 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -109,6 +109,16 @@
        clock-stretch-ns = <12600>;
        pinctrl-names = "default";
        pinctrl-0 = <&i2c2_pins>;
+
+       trackpad@15 {
+               compatible = "elan,ekth3000";
+               reg = <0x15>;
+               interrupts-extended = <&pio 15 IRQ_TYPE_LEVEL_LOW>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&trackpad_pins>;
+               vcc-supply = <&pp3300_u>;
+               wakeup-source;
+       };
 };
 
 &i2c3 {
@@ -436,6 +446,14 @@
                        bias-disable;
                };
        };
+
+       trackpad_pins: trackpad-default-pins {
+               pins-int-n {
+                       pinmux = <PINMUX_GPIO15__FUNC_GPIO15>;
+                       input-enable;
+                       bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+               };
+       };
 };
 
 &spi1 {