linux-kernel - [PATCH 1/5] arm64: dts: qcom: x1e80100-hp-x14: add usb-1-ss1-sbu-mux

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Message-Id: <20250410-hp-x14-v1-1-b4e5ca253ec9@oldschoolsolutions.biz>
Date: Thu, 10 Apr 2025 11:13:22 +0200
From: Jens Glathe via B4 Relay <devnull+jens.glathe.oldschoolsolutions.biz@...nel.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>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Jens Glathe <jens.glathe@...schoolsolutions.biz>
Subject: [PATCH 1/5] arm64: dts: qcom: x1e80100-hp-x14: add
 usb-1-ss1-sbu-mux

From: Jens Glathe <jens.glathe@...schoolsolutions.biz>

The usb_1_1 port doesn't have the PS8830 repeater, but apparently some
MUX for DP altmode control. After a suggestion from sgerhold on
'#aarch64-laptops' I added gpio-sbu-mux nodes from the x1e80100-QCP
tree, and this appears to work well. It is still guesswork, but
working guesswork.

Added and rewired for usb_1_1

Signed-off-by: Jens Glathe <jens.glathe@...schoolsolutions.biz>
---
 .../boot/dts/qcom/x1e80100-hp-omnibook-x14.dts     | 51 ++++++++++++++++++++--
 1 file changed, 47 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-hp-omnibook-x14.dts b/arch/arm64/boot/dts/qcom/x1e80100-hp-omnibook-x14.dts
index 28298021cc367c279eebc08be6165fc1af9f2033..27f6b21589704b1767d45763773da4cf9c43c77b 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-hp-omnibook-x14.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-hp-omnibook-x14.dts
@@ -150,15 +150,15 @@ port@1 {
 					reg = <1>;
 
 					pmic_glink_ss1_ss_in: endpoint {
-						remote-endpoint = <&retimer_ss1_ss_out>;
+						remote-endpoint = <&usb_1_ss1_qmpphy_out>;
 					};
 				};
 
 				port@2 {
 					reg = <2>;
 
-					pmic_glink_ss1_con_sbu_in: endpoint {
-						remote-endpoint = <&retimer_ss1_con_sbu_out>;
+					pmic_glink_ss1_sbu: endpoint {
+						remote-endpoint = <&usb_1_ss1_sbu_mux>;
 					};
 				};
 			};
@@ -533,6 +533,25 @@ vreg_pmu_rfa_1p7: ldo9 {
 			};
 		};
 	};
+
+	usb-1-ss1-sbu-mux {
+		compatible = "onnn,fsusb42", "gpio-sbu-mux";
+
+		enable-gpios = <&tlmm 179 GPIO_ACTIVE_LOW>;
+		select-gpios = <&tlmm 178 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&usb_1_ss1_sbu_default>;
+		pinctrl-names = "default";
+
+		mode-switch;
+		orientation-switch;
+
+		port {
+			usb_1_ss1_sbu_mux: endpoint {
+				remote-endpoint = <&pmic_glink_ss1_sbu>;
+			};
+		};
+	};
 };
 
 &apps_rsc {
@@ -1566,6 +1585,30 @@ usb1_pwr_3p3_reg_en: usb1-pwr-3p3-reg-en-state {
 		bias-disable;
 	};
 
+	usb_1_ss1_sbu_default: usb-1-ss1-sbu-state {
+		mode-pins {
+			pins = "gpio177";
+			function = "gpio";
+			bias-disable;
+			drive-strength = <2>;
+			output-high;
+		};
+
+		oe-n-pins {
+			pins = "gpio179";
+			function = "gpio";
+			bias-disable;
+			drive-strength = <2>;
+		};
+
+		sel-pins {
+			pins = "gpio178";
+			function = "gpio";
+			bias-disable;
+			drive-strength = <2>;
+		};
+	};
+
 	wcd_default: wcd-reset-n-active-state {
 		pins = "gpio191";
 		function = "gpio";
@@ -1668,7 +1711,7 @@ &usb_1_ss1_dwc3_hs {
 };
 
 &usb_1_ss1_qmpphy_out {
-	remote-endpoint = <&retimer_ss1_ss_in>;
+	remote-endpoint = <&pmic_glink_ss1_ss_in>;
 };
 
 &usb_mp {

-- 
2.48.1