linux-kernel - [PATCH v2] ARM: dts: colibri-imx6ull: Enable dual-role switching

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Date:   Tue, 15 Nov 2022 19:05:54 +0100
From:   Philippe Schenker <dev@...henker.ch>
To:     devicetree@...r.kernel.org, Shawn Guo <shawnguo@...nel.org>
Cc:     Alexander Stein <alexander.stein@...tq-group.com>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Fabio Estevam <festevam@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] ARM: dts: colibri-imx6ull: Enable dual-role switching

From: Philippe Schenker <philippe.schenker@...adex.com>

The Colibri standard provides a GPIO called USBC_DET to switch from
USB Host to USB Device and back. Make use of this GPIO by adding it
with usb-connector framework.

Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>

---

Changes in v2:
- Switched from extcon-usb-gpio to usb-connector-gpio

 arch/arm/boot/dts/imx6ull-colibri.dtsi | 29 ++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi
index a4429ba1f2ae..336ab2e0534c 100644
--- a/arch/arm/boot/dts/imx6ull-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi
@@ -24,6 +24,28 @@ backlight: backlight {
 		status = "disabled";
 	};
 
+	connector {
+		compatible = "gpio-usb-b-connector", "usb-b-connector";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_snvs_usbc_det>;
+		id-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>; /* SODIMM 137 / USBC_DET */
+		label = "USBC";
+		self-powered;
+		type = "micro";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				usb_dr_connector: endpoint {
+					remote-endpoint = <&usb1_drd_sw>;
+				};
+			};
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";
@@ -280,6 +302,13 @@ &usbotg1 {
 	srp-disable;
 	hnp-disable;
 	adp-disable;
+	usb-role-switch;
+
+	port {
+		usb1_drd_sw: endpoint {
+			remote-endpoint = <&usb_dr_connector>;
+		};
+	};
 };
 
 /* Colibri USBH */
-- 
2.38.1