Hi Nicolas, On 4/28/22 13:15, Nicolas Frattaroli wrote: > On Montag, 25. April 2022 15:35:00 CEST Michael Riesch wrote: >> This USB 3.0 controller is capable of OTG/DRD operation. Enable it in the >> device tree. >> >> Signed-off-by: Michael Riesch <michael.riesch@xxxxxxxxxxxxxx> >> --- >> arch/arm64/boot/dts/rockchip/rk356x.dtsi | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi >> index 55e6dcb948cc..f611aaf2d238 100644 >> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi >> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi >> @@ -266,7 +266,7 @@ usb_host0_xhci: usb@fcc00000 { >> <&cru ACLK_USB3OTG0>; >> clock-names = "ref_clk", "suspend_clk", >> "bus_clk"; >> - dr_mode = "host"; >> + dr_mode = "otg"; >> phy_type = "utmi_wide"; >> power-domains = <&power RK3568_PD_PIPE>; >> resets = <&cru SRST_USB3OTG0>; >> > > Hi Michael, > > according to official specs[1], only the RK3568 is capable of using the > USB 3.0 controller in OTG mode. For the RK3566, OTG is USB 2.0, if I > understand this correctly. > > So I think this should be an override in rk3568.dtsi. Thanks for pointing that out -- will change in v2 (I'll wait a bit, though, as I hope that patches 2 and 3 will be applied as they are ;-) Best regards, Michael > > Regards, > Nicolas Frattaroli > > [1]: Compare page 17 of the RK3568 datasheet to page 16 of the RK3566 > datasheet > >