diff options
Diffstat (limited to 'target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch')
| -rw-r--r-- | target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch b/target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch new file mode 100644 index 0000000000..1abab5e2eb --- /dev/null +++ b/target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch @@ -0,0 +1,32 @@ +From e12f67fe83446432ef16704c22ec23bd1dbcd094 Mon Sep 17 00:00:00 2001 +From: Vicente Bergas <vicencb@gmail.com> +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 <vicencb@gmail.com> +Link: https://lore.kernel.org/r/20201201154132.1286-4-vicencb@gmail.com +Signed-off-by: Heiko Stuebner <heiko@sntech.de> +--- + 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.dts ++++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts +@@ -684,7 +684,7 @@ + + &usbdrd_dwc3_0 { + status = "okay"; +- dr_mode = "otg"; ++ dr_mode = "host"; + }; + + &usbdrd3_1 { |