298977887/lede
1
0
Fork 0
mirror of https://github.com/coolsnowwolf/lede.git synced 2025-04-18 17:33:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

rockchip: use USB host by default on R4S

Browse Source
This commit is contained in:
lean 2020-12-23 00:29:53 +08:00
parent 5be81314bb
commit 48f9978555
1 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
target/linux/rockchip/patches-5.4/104-rockchip-use-USB-host-by-default-on-rk3399-rock-pi-4.patch Normal file
View File

@ -0,0 +1,33 @@
From 75b1c522cc33fa9b79077802a49803c874f647b1 Mon Sep 17 00:00:00 2001
From: Marty Jones <mj8263788@gmail.com>
Date: Tue, 15 Dec 2020 12:58:37 -0500
Subject: [PATCH] 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>
Signed-off-by: Marty Jones <mj8263788@gmail.com>
---
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 {