arm64: dts: mt8173: Add G2Touch touchscreen node

Lenovo Ideapad C330 Chromebook (MTK) uses G2Touch touchscreen as a
second source component.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20231115043511.2670477-1-treapking@chromium.org
[Angelo: Rebased and added comment]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
index 90cbbc18a4834e3937b80b892c2396e4c45748b8..8d1cbc92bce320f9b42da6d492fe464dcc99e7e9 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
@@ -27,6 +27,15 @@
                hid-descr-addr = <0x0020>;
                interrupts-extended = <&pio 88 IRQ_TYPE_LEVEL_LOW>;
        };
+
+       /* Lenovo Ideapad C330 uses G2Touch touchscreen as a 2nd source touchscreen */
+       touchscreen@40 {
+               compatible = "hid-over-i2c";
+               reg = <0x40>;
+               hid-descr-addr = <0x0001>;
+               interrupt-parent = <&pio>;
+               interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
+       };
 };
 
 &i2c4 {