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

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Message-ID: <20250220110948.45596-5-angelogioacchino.delregno@collabora.com>
Date: Thu, 20 Feb 2025 12:09:48 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: linux-mediatek@...ts.infradead.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com,
	pablo.sun@...iatek.com
Subject: [PATCH v1 4/4] arm64: dts: mediatek: mt8390-genio-common: Configure touch vreg pins

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@...labora.com>
---
 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