On Wed, Mar 23, 2022 at 2:28 AM Marcel Ziswiler marcel.ziswiler@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