linux-kernel - [PATCH v2] arm64: dts: qcom: x1e80100-dell-xps13-9345: Enable fingerprint sensor

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20250605-xps13-fingerprint-v2-1-eebf84c172f2@oss.qualcomm.com>
Date: Thu, 05 Jun 2025 18:39:15 -0500
From: Bjorn Andersson via B4 Relay <devnull+bjorn.andersson.oss.qualcomm.com@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Stefan Schmidt <stefan.schmidt@...aro.org>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Aleksandrs Vinarskis <alex.vinarskis@...il.com>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 
 Bjorn Andersson <bjorn.andersson@....qualcomm.com>
Subject: [PATCH v2] 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.

Tested-by: Stefan Schmidt <stefan.schmidt@...aro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Tested-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
---
Changes in v2:
- Dropped patch 1, as an equivalent patch was merged separately
- Moved repeater to other multiport port (per review suggestion)
- Link to v1: https://lore.kernel.org/r/20250318-xps13-fingerprint-v1-0-fbb02d5a34a7@oss.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..a98254e486dbc7aef1aced34690382950cb3e231 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>;
+
+	status = "okay";
+};
+
+&usb_mp_hsphy1 {
+	vdd-supply = <&vreg_l2e_0p8>;
+	vdda12-supply = <&vreg_l3e_1p2>;
+
+	phys = <&eusb6_repeater>;
+
+	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";
+};

---
base-commit: 4f27f06ec12190c7c62c722e99ab6243dea81a94
change-id: 20250318-xps13-fingerprint-a7fbe2792c24

Best regards,
-- 
Bjorn Andersson <bjorn.andersson@....qualcomm.com>