linux-kernel - [PATCH 7/7] arm64: dts: qcom: sc8280xp-lenovo-thinkpad-x13s: add alternate touchpad

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Date:   Fri,  5 Aug 2022 11:23:17 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 7/7] arm64: dts: qcom: sc8280xp-lenovo-thinkpad-x13s: add alternate touchpad

Add support for the alternate (second-source) touchpad found on some
X13s laptops.

Note that alternate touchpad is kept disabled for now. The boot firmware
should determine which device is actually populated and enable only the
corresponding node.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 .../dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
index 1ca72f6ba55a..bdeb2d05aaa1 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -211,6 +211,22 @@ &qup2_i2c5 {
 
 	status = "okay";
 
+	touchpad@15 {
+		compatible = "hid-over-i2c";
+		reg = <0x15>;
+
+		hid-descr-addr = <0x1>;
+		interrupts-extended = <&tlmm 182 IRQ_TYPE_LEVEL_LOW>;
+		vdd-supply = <&vreg_misc_3p3>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tpad_default>;
+
+		wakeup-source;
+
+		status = "disabled";
+	};
+
 	touchpad@2c {
 		compatible = "hid-over-i2c";
 		reg = <0x2c>;
-- 
2.35.1