From: Vicente Bergas vicencb@gmail.com
[ Upstream commit e12f67fe83446432ef16704c22ec23bd1dbcd094 ]
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 vicencb@gmail.com Link: https://lore.kernel.org/r/20201201154132.1286-4-vicencb@gmail.com Signed-off-by: Heiko Stuebner heiko@sntech.de Stable-dep-of: cee572756aa2 ("arm64: dts: rockchip: Disable HS400 for eMMC on ROCK Pi 4") Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi index 98f52fac13535..6dc6dee6c13e2 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi @@ -671,7 +671,7 @@
&usbdrd_dwc3_0 { status = "okay"; - dr_mode = "otg"; + dr_mode = "host"; };
&usbdrd3_1 {