On 23/09/15 18:22, Jeremy Linton wrote:
Marc,

|FWIW, mainline booting with this patch on Juno r1 with ACPI enabled
dies a |horrible death:

Sorry about the delay, I didn't see this message.

<trimmed>

|How did you get this to work? Firmware release?

Yes, it's a firmware problem with the ACPI tables. It is likely you
need _DSD changes for the SMSC. If your trying to run juno with ACPI
there are a few other ACPI table changes you will need beyond what
was in the last linaro release. I wanted to just provide a direct
link to the correct firmware in this response, but it seems the
required version is sort of up in the air at the moment. Be assured I
will really push on this next week, and will provide a follow up
here.

Originally, the lack of DSD wasn't a problem, but as this patch
evolved  the fact that it consolidates a number of configuration code
paths balancing that got tricky, and ACPI machines with "bad" tables
were the victims (rather than breaking something I can't control).


Even now absence of _DSD *should* continue to be just fine. We can
bailout without initializing the device. Pulling the entire kernel down
just because of an incomplete device entry make no sense IMO.

In the meantime, if this is blocking anyone I can provide
instructions on how to update the required ACPI tables.


I found that the driver has issues even with DT missing some of the
optional properties. We need to fix it but I don't have much knowledge
of the driver and also not sure how these properties are defined in
ACPI/DSD world i.e. required vs optional.

Regards,
Sudeep
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