linux-kernel - [PATCH 1/2] arm64: dts: qcom: x1e001de-devkit: Describe USB retimers resets pin configs

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Message-Id: <20250318-x1e001de-devkit-dts-fix-retimer-gpios-v1-1-1c092f630b0c@linaro.org>
Date: Tue, 18 Mar 2025 17:50:34 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: 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>, Sibi Sankar <quic_sibis@...cinc.com>
Cc: Johan Hovold <johan@...nel.org>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH 1/2] arm64: dts: qcom: x1e001de-devkit: Describe USB
 retimers resets pin configs

Currently, on the X Elite Devkit, the pin configuration of the reset
gpios for all three PS8830 USB retimers are left configured by the
bootloader.

Fix that by describing their pin configuration.

Fixes: 019e1ee32fec ("arm64: dts: qcom: x1e001de-devkit: Enable external DP support")
Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 arch/arm64/boot/dts/qcom/x1e001de-devkit.dts | 32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts b/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
index 74911861a3bf2606add8cf4aaa3816542e837513..902335396c586a991c4a2de19906b039d887780f 100644
--- a/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
+++ b/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
@@ -789,6 +789,9 @@ typec-mux@8 {
 
 		reset-gpios = <&tlmm 185 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr2_default>;
+		pinctrl-names = "default";
+
 		orientation-switch;
 		retimer-switch;
 
@@ -843,6 +846,9 @@ typec-mux@8 {
 
 		reset-gpios = <&pm8550_gpios 10 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr0_default>;
+		pinctrl-names = "default";
+
 		retimer-switch;
 		orientation-switch;
 
@@ -897,6 +903,9 @@ typec-mux@8 {
 
 		reset-gpios = <&tlmm 176 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr1_default>;
+		pinctrl-names = "default";
+
 		retimer-switch;
 		orientation-switch;
 
@@ -1018,6 +1027,15 @@ &pcie6a_phy {
 };
 
 &pm8550_gpios {
+	rtmr0_default: rtmr0-reset-n-active-state {
+		pins = "gpio10";
+		function = "normal";
+		power-source = <1>; /* 1.8V */
+		bias-disable;
+		input-disable;
+		output-enable;
+	};
+
 	usb0_3p3_reg_en: usb0-3p3-reg-en-state {
 		pins = "gpio11";
 		function = "normal";
@@ -1205,6 +1223,20 @@ wake-n-pins {
 		};
 	};
 
+	rtmr1_default: rtmr1-reset-n-active-state {
+		pins = "gpio176";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	rtmr2_default: rtmr2-reset-n-active-state {
+		pins = "gpio185";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	rtmr1_1p15_reg_en: rtmr1-1p15-reg-en-state {
 		pins = "gpio188";
 		function = "gpio";

-- 
2.34.1