imx8mp EQoS "EQOS_DMA_MODE_SWR stuck"

[Tim Harvey]

On Wed, Mar 23, 2022 at 2:28 AM Marcel Ziswiler
<marcel.ziswiler at toradex.com> wrote:
>
> Hi Tim
>
> On Tue, 2022-03-22 at 17:04 -0700, Tim Harvey wrote:
> > Greetings,
> >
> > I'm working on adding board support for an imx8mp SoC board which uses
> > the EQoS MAC interface. I'm finding that eqos_start() fails with
> > 'EQOS_DMA_MODE_SWR stuck'. I believe this is likely a clock issue but
> > not clear what it could be that isn't properly defined in imx8mp.dtsi.
> >
> > Any ideas?
>
> I recall having seen this during my early bring-up of mainline U-Boot on our i.MX 8M Plus based Verdin.
> However, it turned out to be some configuration issue of sorts on my side. Unfortunately, I do not remember the
> exact details resp. after much debugging I then went back to the EVK configuration changing only the console
> UART and then piece by piece adopted it further to our hardware and haven't seen it ever since. As I am
> currently anyway working on U-Boot stuff I gave today's master a spin and can assure you that EQOS works on our
> Verdin iMX8M Plus without any issues. Sorry, that I can not give you any better more specific answer.
>

Marcel,

Thanks - great advice on booting via evk code. I found I was simply
missing the 'setup_eqos' function that set GPR bits and enabled the
ENET_125MHz clock

Best regards,

Tim