linux-kernel - [PATCH v2 2/3] arm64: dts: rockchip: add usb-id extcon on rk3588 tiger

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Date: Mon, 22 Apr 2024 18:39:50 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: heiko@...ech.de
Cc: quentin.schulz@...obroma-systems.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Heiko Stuebner <heiko.stuebner@...rry.de>
Subject: [PATCH v2 2/3] arm64: dts: rockchip: add usb-id extcon on rk3588 tiger

From: Heiko Stuebner <heiko.stuebner@...rry.de>

The Q7 standard specifies a usb-id pin on the connector to distiuish
between host and device mode. Model this via the usb-id extcon binding.

While the pin is part of the Q7 standard, so part of the module, the
extcon stays disabled in the som dtsi and will only be enabled in a
baseboard using it.

Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
---
 arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
index 4984e36a8c2d..cafb40283882 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
@@ -23,6 +23,14 @@ emmc_pwrseq: emmc-pwrseq {
 		reset-gpios = <&gpio2 RK_PA3 GPIO_ACTIVE_HIGH>;
 	};
 
+	extcon_usb3: extcon-usb3 {
+		compatible = "linux,extcon-usb-gpio";
+		id-gpios = <&gpio3 RK_PC0 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb3_id>;
+		status = "disabled";
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -327,6 +335,13 @@ module_led_pin: module-led-pin {
 			rockchip,pins = <1 RK_PD3 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	usb3 {
+		usb3_id: usb3-id {
+			rockchip,pins =
+			  <3 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &saradc {
-- 
2.39.2