On Lenovo ThinkPad T14s, the fingerprint reader placed in the power
button is connected via the usb_2 controller. The controller has only
a USB 2.0 PHY which is then connected via a NXP PTN3222 eUSB2 repeater,
which in turn is connected to the Goodix fingerprint reader.
So enable all the usb_2 controller and PHY nodes, set dual-role mode to
host and describe the eUSB2 repeater in order to get the fingerprint
reader discovered.
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
---
.../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts | 39 ++++++++++++++++++++++
1 file changed, 39 insertions(+)
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 9bb6994cc482e28e3e78817adf7ef15421f63219..b2c2347f54fa65f9355f0d7c008119e95bb64fb2 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
@@ -612,6 +612,20 @@ &i2c5 {
status = "okay";
+ eusb5_repeater: redriver@43 {
+ compatible = "nxp,ptn3222";
+ reg = <0x43>;
+ #phy-cells = <0>;
+
+ vdd3v3-supply = <&vreg_l13b_3p0>;
+ vdd1v8-supply = <&vreg_l4b_1p8>;
+
+ reset-gpios = <&tlmm 7 GPIO_ACTIVE_LOW>;
+
+ pinctrl-0 = <&eusb5_reset_n>;
+ pinctrl-names = "default";
+ };
+
eusb3_repeater: redriver@47 {
compatible = "nxp,ptn3222";
reg = <0x47>;
@@ -884,6 +898,14 @@ eusb3_reset_n: eusb3-reset-n-state {
output-low;
};
+ eusb5_reset_n: eusb5-reset-n-state {
+ pins = "gpio7";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ output-low;
+ };
+
eusb6_reset_n: eusb6-reset-n-state {
pins = "gpio184";
function = "gpio";
@@ -1058,6 +1080,23 @@ &usb_1_ss1_qmpphy_out {
remote-endpoint = <&pmic_glink_ss1_ss_in>;
};
+&usb_2 {
+ status = "okay";
+};
+
+&usb_2_dwc3 {
+ dr_mode = "host";
+};
+
+&usb_2_hsphy {
+ vdd-supply = <&vreg_l2e_0p8>;
+ vdda12-supply = <&vreg_l3e_1p2>;
+
+ phys = <&eusb5_repeater>;
+
+ status = "okay";
+};
+
&usb_mp {
status = "okay";
};
---
base-commit: 7b4b9bf203da94fbeac75ed3116c84aa03e74578
change-id: 20250107-x1e80100-t14-enable-fingerprint-sensor-a517aaa46576
Best regards,
--
Abel Vesa <abel.vesa@xxxxxxxxxx>
