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Date:   Tue, 25 Jul 2023 10:46:33 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     cros-qcom-dts-watchers@...omium.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH RFT] arm64: dts: qcom: sc7280: drop incorrect EUD port on SoC side

Qualcomm Embedded USB Debugger (EUD) second port should point to Type-C
USB connector.  Such connector was defined directly in root node of
sc7280.dtsi which is clearly wrong.  SC7280 is a chip, so physically it
does not have USB Type-C port.  The connector is usually accessible
through some USB switch or controller.

Correct the EUD/USB connector topology by removing the top-level fake
USB connector and adding appropriate ports in boards having actual USB
Type-C connector defined (Herobrine, IDP).  All other boards will have
this EUD port missing.

This fixes also dtbs_check warnings:

  sc7280-herobrine-crd.dtb: connector: ports:port@0: 'reg' is a required property

Fixes: 9ee402ccfeb1 ("arm64: dts: qcom: sc7280: Fix EUD dt node syntax")
Cc: Bhupesh Sharma <bhupesh.sharma@...aro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Not tested on hardware.
---
 .../arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 15 +++++++++++++
 .../arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi | 15 +++++++++++++
 arch/arm64/boot/dts/qcom/sc7280.dtsi          | 21 +------------------
 3 files changed, 31 insertions(+), 20 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
index 9ea6636125ad..2a4f239c5632 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
@@ -573,6 +573,12 @@ usb_c0: connector@0 {
 				power-role = "dual";
 				data-role = "host";
 				try-power-role = "source";
+
+				port {
+					usb_c0_ep: endpoint {
+						remote-endpoint = <&eud_con>;
+					};
+				};
 			};
 
 			usb_c1: connector@1 {
@@ -590,6 +596,15 @@ usb_c1: connector@1 {
 #include <arm/cros-ec-keyboard.dtsi>
 #include <arm/cros-ec-sbs.dtsi>
 
+&eud_ports {
+	port@1 {
+		reg = <1>;
+		eud_con: endpoint {
+			remote-endpoint = <&usb_c0_ep>;
+		};
+	};
+};
+
 &keyboard_controller {
 	function-row-physmap = <
 		MATRIX_KEY(0x00, 0x02, 0)	/* T1 */
diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi
index ebae545c587c..ffc469431340 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi
@@ -44,6 +44,12 @@ usb_c0: connector@0 {
 				power-role = "dual";
 				data-role = "host";
 				try-power-role = "source";
+
+				port {
+					usb_c0_ep: endpoint {
+						remote-endpoint = <&eud_con>;
+					};
+				};
 			};
 
 			usb_c1: connector@1 {
@@ -78,6 +84,15 @@ cr50: tpm@0 {
 	};
 };
 
+&eud_ports {
+	port@1 {
+		reg = <1>;
+		eud_con: endpoint {
+			remote-endpoint = <&usb_c0_ep>;
+		};
+	};
+};
+
 &tlmm {
 	ap_ec_int_l: ap-ec-int-l-state {
 		pins = "gpio18";
diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 925428a5f6ae..af9bb2ebcaa1 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -649,18 +649,6 @@ cpu7_opp_3014mhz: opp-3014400000 {
 		};
 	};
 
-	eud_typec: connector {
-		compatible = "usb-c-connector";
-
-		ports {
-			port@0 {
-				con_eud: endpoint {
-					remote-endpoint = <&eud_con>;
-				};
-			};
-		};
-	};
-
 	memory@...00000 {
 		device_type = "memory";
 		/* We expect the bootloader to fill in the size */
@@ -3624,7 +3612,7 @@ eud: eud@...0000 {
 			      <0 0x88e2000 0 0x1000>;
 			interrupts-extended = <&pdc 11 IRQ_TYPE_LEVEL_HIGH>;
 
-			ports {
+			eud_ports: ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
 
@@ -3634,13 +3622,6 @@ eud_ep: endpoint {
 						remote-endpoint = <&usb2_role_switch>;
 					};
 				};
-
-				port@1 {
-					reg = <1>;
-					eud_con: endpoint {
-						remote-endpoint = <&con_eud>;
-					};
-				};
 			};
 		};
 
-- 
2.34.1

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