linux-kernel - [PATCH v2] arm64: dts: qcom: x1e80100-t14s: add another trackpad support

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Message-Id: <20240917150049.3110-1-srinivas.kandagatla@linaro.org>
Date: Tue, 17 Sep 2024 11:00:49 -0400
From: srinivas.kandagatla@...aro.org
To: andersson@...nel.org
Cc: konradybcio@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	abel.vesa@...aro.org,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2] arm64: dts: qcom: x1e80100-t14s: add another trackpad support

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

Trackpad HID device on some of the T14s Product Models 21N2ZC5PUS is
at I2C address 0x2c add this to be able to get it working on these laptops.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
Changes since v1:
- moved pinctrl to parent node so that pinctrl can be claimed globally.

 .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts  | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
index 08ec2419f95f..45a77c1fb6f4 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
@@ -551,6 +551,9 @@ zap-shader {
 &i2c0 {
 	clock-frequency = <400000>;
 
+	pinctrl-0 = <&tpad_default>;
+	pinctrl-names = "default";
+
 	status = "okay";
 
 	/* ELAN06E2 or ELAN06E3 */
@@ -561,13 +564,19 @@ touchpad@15 {
 		hid-descr-addr = <0x1>;
 		interrupts-extended = <&tlmm 3 IRQ_TYPE_LEVEL_LOW>;
 
-		pinctrl-0 = <&tpad_default>;
-		pinctrl-names = "default";
-
 		wakeup-source;
 	};
 
-	/* TODO: second-sourced SYNA8022 or SYNA8024 touchpad @ 0x2c */
+	/* SYNA8022 or SYNA8024 */
+	touchpad@2c {
+		compatible = "hid-over-i2c";
+		reg = <0x2c>;
+
+		hid-descr-addr = <0x20>;
+		interrupts-extended = <&tlmm 3 IRQ_TYPE_LEVEL_LOW>;
+
+		wakeup-source;
+	};
 
 	/* ELAN06F1 or SYNA06F2 */
 	keyboard@3a {
-- 
2.39.2