Re: [PATCH] remoteproc: qcom: q6v5-pil: add SCM probe dependency

From: Sibi Sankar
Date: Tue Oct 09 2018 - 13:21:37 EST



On 2018-10-09 22:32, Brian Norris wrote:
On Mon, Oct 08, 2018 at 11:21:25PM -0700, Bjorn Andersson wrote:
On Mon 08 Oct 19:08 PDT 2018, Brian Norris wrote:

> Similar to qcom_q6v5_pas and qcom_wcnss drivers, probe will fail if SCM
> is not up.
>

Thanks Brian, this dependency was introduced with the memory ownership
support.

That's a good point. I'm actually not that familiar with this particular
driver--I was just trying to resolve an OOPS I saw while bringing this
driver up--but that does look correct.

I applied it with an updated conditional to make it explicit that it
related to need_mem_protection, updated the commit message to describe
actual relationship to the memory protection mechanism and added a
Fixes: tag.

Your version looks good, thanks.

Don't we also need to add the ability to disable need_mem_protection
when we're running ATF?

I'm not sure exactly, but FWIW I'm running some form of ATF on SDM845
and I'm running with 'needs_memory_protection' (hence, this patch).


AFAIK ATF will eventually support the hyp assign calls even though they
are just stubs as of now.

Regards,
Brian

--
-- Sibi Sankar --
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
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