Rockchip DWC2 issue

[Peter Robinson]

On Wed, Jun 21, 2023 at 9:38 PM 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.

The B models of the 1-3 have a hub.

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

Correct, the Zeros, Model As, Compute Modules (inc the CM4) in some
configurations and the RPi4 via the USB-C (albeit I suspect rarely
used as such) all have dwc2 directly connected.