Question: Ethernet Phy issues on Colibri IMX8X (imx8qxp) - kernel 5.19

[Marcel Ziswiler]

Sali Philipp

On Wed, 2022-08-10 at 00:55 +0200, Philipp Rossak wrote:
> Hi,
> 
> I currently have a project with a Toradex Colibri IMX8X SOM board whith 
> an onboard Micrel KSZ8041NL Ethernet PHY.
> 
> The hardware is described in the devictree properly so I expected that 
> the onboard Ethernet with the phy is working.
> 
> Currently I'm not able to get the link up.
> 
> I already compared it to the BSP kernel, but I didn't found anything 
> helpful. The BSP kernel is working.
> 
> Do you know if there is something in the kernel missing and got it running?

Yes, you may just revert the following commit babfaa9556d7 ("clk: imx: scu: add more scu clocks")

Alternatively, just commenting out the following single line also helps:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/imx/clk-imx8qxp.c?h=v5.19#n172

I just found this out about two weeks ago before I went to vacation and since have to find out with NXP what
exactly the idea of this clocking/SCFW stuff is related to our hardware.

@NXP: If any of you guys could shed some light that would be much appreciated. Thanks!

> Thanks,
> Philipp

Cheers

Marcel