Rockchip DWC2 issue

[Jagan Teki]

On Thu, Jun 22, 2023 at 2:08 AM Marek Vasut <marex at denx.de> wrote:
>
> On 6/20/23 16:37, Jagan Teki wrote:
> > Hi,
> >
> > Has anyone tried to use dwc2 and echi port together with USB disk?
> > look like this is not working with this combination on any Rockchip
> > SoC's
> >
> > Here are the issues that I've reproduced in RK3328 where the disk
> > connected in EHCI port is detecting but DWC2 is not. Any clue?
>
> I generally avoid using DWC2 as host. RPi 1/2/3 does use it as host, but
> I think there is a hub between.

Looks this is the same case even for the Rockchip SoC side as well.

>
> Does the stick work if you plug a hub between the board and stick ?

I have observed the same behavior as before It detects very rarely.

>
> Also, RPi zero (?) might have raw host port on it, without hub .

Worth to try, will check it.

Thanks,
Jagan