linux-kernel - [PATCH 2/2] arm64: dts: qcom: x1e80100-dell-xps13-9345: Enable fingerprint sensor

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Message-Id: <20250318-xps13-fingerprint-v1-2-fbb02d5a34a7@oss.qualcomm.com>
Date: Tue, 18 Mar 2025 22:22:57 -0500
From: Bjorn Andersson via B4 Relay <devnull+bjorn.andersson.oss.qualcomm.com@...nel.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Aleksandrs Vinarskis <alex.vinarskis@...il.com>, 
 linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Bjorn Andersson <bjorn.andersson@....qualcomm.com>
Subject: [PATCH 2/2] arm64: dts: qcom: x1e80100-dell-xps13-9345: Enable
 fingerprint sensor

From: Bjorn Andersson <bjorn.andersson@....qualcomm.com>

The fingerprint sensor, hidden in the power button, is connected to one
of the USB multiport ports; while the other port is unused.

Describe the USB controller, the four phys and the repeater involved to
make the fingerprint sensor operational.

Signed-off-by: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
---
 .../boot/dts/qcom/x1e80100-dell-xps13-9345.dts     | 59 +++++++++++++++++++++-
 1 file changed, 57 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
index 967f6dba0878b51a985fd7c9570b8c4e71afe57d..a35557c562d771e2ce209fca05b82c1943d70f63 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
@@ -744,8 +744,21 @@ touchscreen@10 {
 
 &i2c9 {
 	clock-frequency = <400000>;
-	status = "disabled";
-	/* USB3 retimer device @0x4f */
+	status = "okay";
+
+	eusb6_repeater: redriver@4f {
+		compatible = "nxp,ptn3222";
+		reg = <0x4f>;
+		#phy-cells = <0>;
+
+		vdd3v3-supply = <&vreg_l13b_3p0>;
+		vdd1v8-supply = <&vreg_l4b_1p8>;
+
+		reset-gpios = <&tlmm 184 GPIO_ACTIVE_LOW>;
+
+		pinctrl-0 = <&eusb6_reset_n>;
+		pinctrl-names = "default";
+	};
 };
 
 &i2c17 {
@@ -967,6 +980,14 @@ edp_reg_en: edp-reg-en-state {
 		bias-disable;
 	};
 
+	eusb6_reset_n: eusb6-reset-n-state {
+		pins = "gpio184";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+		output-low;
+	};
+
 	hall_int_n_default: hall-int-n-state {
 		pins = "gpio92";
 		function = "gpio";
@@ -1172,3 +1193,37 @@ &usb_1_ss1_dwc3_hs {
 &usb_1_ss1_qmpphy_out {
 	remote-endpoint = <&retimer_ss1_ss_in>;
 };
+
+&usb_mp {
+	status = "okay";
+};
+
+&usb_mp_hsphy0 {
+	vdd-supply = <&vreg_l2e_0p8>;
+	vdda12-supply = <&vreg_l3e_1p2>;
+
+	phys = <&eusb6_repeater>;
+
+	status = "okay";
+};
+
+&usb_mp_hsphy1 {
+	vdd-supply = <&vreg_l2e_0p8>;
+	vdda12-supply = <&vreg_l3e_1p2>;
+
+	status = "okay";
+};
+
+&usb_mp_qmpphy0 {
+	vdda-phy-supply = <&vreg_l3e_1p2>;
+	vdda-pll-supply = <&vreg_l3c_0p9>;
+
+	status = "okay";
+};
+
+&usb_mp_qmpphy1 {
+	vdda-phy-supply = <&vreg_l3e_1p2>;
+	vdda-pll-supply = <&vreg_l3c_0p9>;
+
+	status = "okay";
+};

-- 
2.48.1