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i.MX6DL - PCIe issue after WDG reset

Question asked by Christian Neuwirth on Feb 12, 2018
Latest reply on Feb 15, 2018 by Artur Petukhov

Hi,

 

we're building our own hardware based on an i.MX6DL and recently ran into a PCIe issue, which is accurately described here (our Kernel version is v4.1.15, though). The work-around proposed in one of the following entries of this thread (i.e. clear the PCIe-related flags in GPR1 and GPR12 in the bootloader; see here) appears to fix this issue.

 

Can you confirm that this is a valid work-around?

 

Furthermore, this raises the question if there are any other registers or components in the SoC that are not cleared/reset after a WDG reset as opposed to a POR.

 

Can you provide some information on that?

 

Thanks,

Chris.

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