linux-kernel - [PATCH v2 1/5] arm: dts: colibri-imx6: usb dual-role switching

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Date:   Wed, 28 Sep 2022 09:33:32 +0200
From:   Marcel Ziswiler <marcel@...wiler.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Philippe Schenker <philippe.schenker@...adex.com>,
        Marcel Ziswiler <marcel.ziswiler@...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>,
        Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/5] arm: dts: colibri-imx6: usb dual-role switching

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

Introduce USBC_DET GPIO based USB dual-role aka device/host switching.

While at it re-work pinmux comment adding SODIMM number to the USBC_DET
entry.

Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>
---

(no changes since v1)

 arch/arm/boot/dts/imx6qdl-colibri.dtsi | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index 023e76215064..3e98b5da0cc6 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -24,6 +24,13 @@ backlight: backlight {
 		status = "disabled";
 	};
 
+	extcon_usbc_det: usbc-det {
+		compatible = "linux,extcon-usb-gpio";
+		id-gpio = <&gpio7 12 GPIO_ACTIVE_HIGH>; /* SODIMM 137 / USBC_DET */
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_usbc_det>;
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";
@@ -670,9 +677,11 @@ &uart3 {
 	status = "disabled";
 };
 
+/* Colibri USBC */
 &usbotg {
 	disable-over-current;
-	dr_mode = "peripheral";
+	dr_mode = "otg";
+	extcon = <0>, <&extcon_usbc_det>;
 	status = "disabled";
 };
 
@@ -1055,7 +1064,7 @@ MX6QDL_PAD_SD4_CMD__UART3_RX_DATA	0x1b0b1
 
 	pinctrl_usbc_det: usbcdetgrp {
 		fsl,pins = <
-			/* USBC_DET */
+			/* SODIMM 137 / USBC_DET */
 			MX6QDL_PAD_GPIO_17__GPIO7_IO12		0x1b0b0
 			/* USBC_DET_OVERWRITE */
 			MX6QDL_PAD_RGMII_RXC__GPIO6_IO30	0x0f058
-- 
2.36.1