The eDP panel has an HPD GPIO. Describe it in the devicetree.
Unfortunately I cannot test this on the non-OLED model since I
only have access to the model with OLED (which also uses the
HPD GPIO).
I believe this could be split into two patches; one adding the
pinctrl node and one adding the hpd gpio to the T14s devicetree.
But I will wait for your comments on this ;-).
This definition looks consistent with the schematic to me.
Signed-off-by: Christopher Obbard <christopher.obbard@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
index 962fb050c55c4fd33f480a21a8c47a484d0c82b8..46c73f5c039ed982b553636cf8c4237a20ba7687 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
@@ -980,8 +980,12 @@ &mdss_dp3 {
aux-bus {
panel: panel {
compatible = "edp-panel";
+ hpd-gpios = <&tlmm 119 GPIO_ACTIVE_HIGH>;
power-supply = <&vreg_edp_3p3>;
+ pinctrl-0 = <&edp_hpd_n_default>;
+ pinctrl-names = "default";
+
port {
edp_panel_in: endpoint {
remote-endpoint = <&mdss_dp3_out>;
@@ -1286,6 +1290,13 @@ hall_int_n_default: hall-int-n-state {
bias-disable;
};
+ edp_hpd_n_default: edp-hpd-n-state {
+ pins = "gpio119";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
pcie4_default: pcie4-default-state {
clkreq-n-pins {
pins = "gpio147";
--
2.49.0