Re: [PATCH 5/5] arm64: tegra: smaug: Add usb-role-switch support
From: Jon Hunter <jonathanh@nvidia.com>
Date: 2026-01-12 22:03:45
Also in:
linux-phy, linux-tegra, linux-usb, lkml
On 04/12/2025 21:27, Diogo Ivo wrote:
quoted hunk ↗ jump to hunk
The USB2 port on Smaug is configured for OTG operation but lacked the required 'usb-role-switch' property, leading to a failed probe and a non-functioning USB port. Add the property along with setting the default role to host. Signed-off-by: Diogo Ivo <redacted> --- arch/arm64/boot/dts/nvidia/tegra210-smaug.dts | 2 ++ 1 file changed, 2 insertions(+)diff --git a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts index b8d854f90be7..49bf23d6f593 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts +++ b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts@@ -1809,6 +1809,8 @@ usb2-0 { status = "okay"; vbus-supply = <&usbc_vbus>; mode = "otg"; + usb-role-switch; + role-switch-default-mode = "host"; };
This change does add the following warning when building with CHECK_DTBS ... arch/arm64/boot/dts/nvidia/tegra210-smaug.dtb: padctl@7009f000 (nvidia,tegra210-xusb-padctl): ports:usb2-0: 'role-switch-default-mode' does not match any of the regexes: '^pinctrl-[0-9]+$' from schema $id: http://devicetree.org/schemas/phy/nvidia,tegra210-xusb-padctl.yaml I know that there are many warnings seen for the smaug DTB, but it would be good to ensure we don't add more. Cheers Jon -- nvpublic