Re: [PATCH 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed

[Lucas Stach]

Am Mittwoch, den 29.05.2019, 00:18 -0700 schrieb Andrey Smirnov:
> Cabling used to connect devices to USBH1 on RDU2 does not meet USB
> spec cable quality and cable length requirements to operate at High
> Speed, so limit the port to Full Speed only.
> 
> > Reported-by: Chris Healy <cphealy@xxxxxxxxx>
> > Reviewed-by: Chris Healy <cphealy@xxxxxxxxx>
> > Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> > Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
> > Cc: Fabio Estevam <festevam@xxxxxxxxx>
> > Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx

Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>

> ---
> Âarch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi | 1 +
> Â1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> index 04d4d4d7e43c..e1d8478884f9 100644
> --- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> @@ -805,6 +805,7 @@
> Â&usbh1 {
> > Â	vbus-supply = <&reg_5p0v_main>;
> > Â	disable-over-current;
> > +	maximum-speed = "full-speed";
> > Â	status = "okay";
> Â};
> Â