arm64: dts: rockchip: fix rk3399-puma-haikou USB OTG mode

[ Upstream commit ed2c66a95c0c5669880aa93d0d34c6e9694b4cbd ]

The micro USB3.0 port available on the Haikou evaluation kit for Puma
RK3399-Q7 SoM supports dual-role model (aka drd or OTG) but its support
was broken until now because of missing logic around the ID pin.

This adds proper support for USB OTG on Puma Haikou by "connecting" the
GPIO used for USB ID to the USB3 controller device.

Cc: Quentin Schulz <foss+kernel@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20220120125156.16217-1-quentin.schulz@theobroma-systems.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
index 292bb7e..3ae5d72 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
@@ -232,6 +232,7 @@
 
 &usbdrd_dwc3_0 {
        dr_mode = "otg";
+       extcon = <&extcon_usb3>;
        status = "okay";
 };
 

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
index fb67db4..002ece5 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
@@ -25,6 +25,13 @@
                };
        };
 
+       extcon_usb3: extcon-usb3 {
+               compatible = "linux,extcon-usb-gpio";
+               id-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_HIGH>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&usb3_id>;
+       };
+
        clkin_gmac: external-gmac-clock {
                compatible = "fixed-clock";
                clock-frequency = <125000000>;
@@ -422,6 +429,13 @@
                          <4 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
+
+       usb3 {
+               usb3_id: usb3-id {
+                       rockchip,pins =
+                         <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
 };
 
 &sdhci {