On 19/03/2025 03:22, Bjorn Andersson via B4 Relay wrote:
From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
---
.../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 {
How about
eusb6_frp_repeater: redriver@4f
leading to> + 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>;
phys = <&eusb6_frp_repeater>;
That's how I did it on Insprion14 and it helps me make sense of the dts
back to the schematic.
+
+ 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
Completely optional obviously.
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
