[PATCH v2 3/3] arm64: dts: qcom: sm7225-fairphone-fp4: Enable USB role switching

From: Luca Weiss <luca.weiss@fairphone.com>
To: Bjorn Andersson <andersson@kernel.org>,
	 Konrad Dybcio <konrad.dybcio@linaro.org>,
	Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>
Cc: ~postmarketos/upstreaming@lists.sr.ht,
	phone-devel@vger.kernel.org,  linux-arm-msm@vger.kernel.org,
	devicetree@vger.kernel.org,  linux-kernel@vger.kernel.org,
	Luca Weiss <luca.weiss@fairphone.com>
Subject: [PATCH v2 3/3] arm64: dts: qcom: sm7225-fairphone-fp4: Enable USB role switching
Date: Fri, 29 Mar 2024 13:26:21 +0100	[thread overview]
Message-ID: <20240329-fp4-tcpm-v2-3-d7f8cd165355@fairphone.com> (raw)
In-Reply-To: <20240329-fp4-tcpm-v2-0-d7f8cd165355@fairphone.com>

Configure the Type-C and VBUS regulator on PM7250B and wire it up to the
USB PHY, so that USB role and orientation switching works.

For now USB Power Delivery properties are skipped / disabled, so that
the (presumably) bootloader-configured charger doesn't get messed with
and we can charge the phone with at least some amount of power.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
---
 arch/arm64/boot/dts/qcom/sm6350.dtsi              | 47 ++++++++++++++++++
 arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 60 ++++++++++++++++++++++-
 2 files changed, 106 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
index b663c1b18f61..2e135989de8c 100644
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -1717,6 +1717,33 @@ usb_1_qmpphy: phy@88e8000 {
 			#phy-cells = <1>;
 
 			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+
+					usb_1_qmpphy_out: endpoint {
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+
+					usb_1_qmpphy_usb_ss_in: endpoint {
+						remote-endpoint = <&usb_1_dwc3_ss_out>;
+					};
+				};
+
+				port@2 {
+					reg = <2>;
+
+					usb_1_qmpphy_dp_in: endpoint {
+					};
+				};
+			};
 		};
 
 		dc_noc: interconnect@9160000 {
@@ -1892,6 +1919,26 @@ usb_1_dwc3: usb@a600000 {
 				snps,hird-threshold = /bits/ 8 <0x10>;
 				phys = <&usb_1_hsphy>, <&usb_1_qmpphy QMP_USB43DP_USB3_PHY>;
 				phy-names = "usb2-phy", "usb3-phy";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+
+						usb_1_dwc3_hs_out: endpoint {
+						};
+					};
+
+					port@1 {
+						reg = <1>;
+
+						usb_1_dwc3_ss_out: endpoint {
+							remote-endpoint = <&usb_1_qmpphy_usb_ss_in>;
+						};
+					};
+				};
 			};
 		};
 
diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
index bc67e8c1fe4d..5d7778c48413 100644
--- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
+++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
@@ -19,6 +19,7 @@
 #include <dt-bindings/leds/common.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/usb/pd.h>
 #include "sm7225.dtsi"
 #include "pm6150l.dtsi"
 #include "pm6350.dtsi"
@@ -543,6 +544,53 @@ conn-therm@1 {
 	};
 };
 
+&pm7250b_typec {
+	vdd-pdphy-supply = <&vreg_l3a>;
+
+	status = "okay";
+
+	connector {
+		compatible = "usb-c-connector";
+
+		power-role = "dual";
+		data-role = "dual";
+		self-powered;
+
+		/*
+		 * Disable USB Power Delivery for now, seems to need extra work
+		 * to support role switching while also letting the battery
+		 * charge still - without charger driver
+		 */
+		typec-power-opmode = "default";
+		pd-disable;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				pm7250b_hs_in: endpoint {
+					remote-endpoint = <&usb_1_dwc3_hs_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				pm7250b_ss_in: endpoint {
+					remote-endpoint = <&usb_1_qmpphy_out>;
+				};
+			};
+		};
+	};
+};
+
+&pm7250b_vbus {
+	regulator-min-microamp = <500000>;
+	regulator-max-microamp = <1500000>;
+	status = "okay";
+};
+
 &pmk8350_rtc {
 	status = "okay";
 };
@@ -726,7 +774,12 @@ &usb_1 {
 
 &usb_1_dwc3 {
 	maximum-speed = "super-speed";
-	dr_mode = "peripheral";
+	dr_mode = "otg";
+	usb-role-switch;
+};
+
+&usb_1_dwc3_hs_out {
+	remote-endpoint = <&pm7250b_hs_in>;
 };
 
 &usb_1_hsphy {
@@ -740,10 +793,15 @@ &usb_1_hsphy {
 &usb_1_qmpphy {
 	vdda-phy-supply = <&vreg_l22a>;
 	vdda-pll-supply = <&vreg_l16a>;
+	orientation-switch;
 
 	status = "okay";
 };
 
+&usb_1_qmpphy_out {
+	remote-endpoint = <&pm7250b_ss_in>;
+};
+
 &wifi {
 	vdd-0.8-cx-mx-supply = <&vreg_l4a>;
 	vdd-1.8-xo-supply = <&vreg_l7a>;

-- 
2.44.0

