[PATCH v1 4/4] arm64: dts: mediatek: mt8390-genio-common: Configure touch vreg pins

From: AngeloGioacchino Del Regno
Date: Thu Feb 20 2025 - 06:12:21 EST


Add a pinctrl configuration for the Touchscreen IC's power line
to make sure that the pin is configured as GPIO and to stop
relying on correct pin configuration from bootloader.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
index 0191776e037c..55564d91423f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
@@ -187,6 +187,8 @@ touch0_fixed_3v3: regulator-5 {
gpio = <&pio 119 GPIO_ACTIVE_HIGH>;
enable-active-high;
vin-supply = <&reg_vsys>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&touch_vreg_pins>;
};

usb_hub_fixed_3v3: regulator-6 {
@@ -1021,6 +1023,13 @@ pins-spi {
};
};

+ touch_vreg_pins: touch-avdd-pins {
+ pins-power {
+ pinmux = <PINMUX_GPIO120__FUNC_B_GPIO120>;
+ output-high;
+ };
+ };
+
touch_pins: touch-pins {
pins-irq {
pinmux = <PINMUX_GPIO6__FUNC_B_GPIO6>;
--
2.48.1