From e12f67fe83446432ef16704c22ec23bd1dbcd094 Mon Sep 17 00:00:00 2001 From: Vicente Bergas Date: Tue, 1 Dec 2020 16:41:32 +0100 Subject: arm64: dts: rockchip: use USB host by default on rk3399-rock-pi-4 Based on the board schematics at https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi_4c_v12_sch_20200620.pdf on page 19 there is an USB Type-A receptacle being used as an USB-OTG port. But the Type-A connector is not valid for OTG operation, for this reason there is a switch to select host or device role. This is non-compliant and error prone because switching is manual. So, use host mode as it corresponds for a Type-A receptacle. Signed-off-by: Vicente Bergas Link: https://lore.kernel.org/r/20201201154132.1286-4-vicencb@gmail.com Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi @@ -680,7 +680,7 @@ &usbdrd_dwc3_0 { status = "okay"; - dr_mode = "otg"; + dr_mode = "host"; }; &usbdrd3_1 {