On 04.02.20 10:45, Martin Kepplinger wrote:

On 20.11.19 19:02, Leonard Crestez wrote:

quoted

On 20.11.2019 18:38, Angus Ainslie wrote:

quoted

On 2019-11-20 08:30, Leonard Crestez wrote:

quoted

On 20.11.2019 17:41, Angus Ainslie wrote:

quoted

Hi Leonard,

On 2019-11-20 07:04, Leonard Crestez wrote:

quoted

On 20.11.2019 16:08, Angus Ainslie wrote:
Is "mainline ATF" an important criteria for Purism?

Yes we intend to bring all of our patches to mainline and were hoping
that NXP would be doing the same. Shouldn't a mainline kernel run on a
mainline ATF ?

You can still use mainline ATF (tested right now) but the imx8m-ddrc
driver won't probe.

Sorry I was talking about the DDR frequency scaling specifically. >

quoted

The ability to mix and match different branches of firmware and kernel
is very useful for testing. There might be slight incompatibilities but
in theory if a feature depends on both firmware and kernel support then
it should gracefully degrade rather than crash or hang.

I saw the check you put in for the correct ATF version and that's very
helpful thanks.

quoted

ATF support for this feature will be mainlined eventually, I picked the
linux side first because review is more challenging and changes are
much larger relative to what we have in our internal tree.

Do you have a patch against mainline ATF that we can test this feature
with ?

Not right now, and imx atf is based on a slightly older version so some 
porting effort might be required.

Hi Leonard,

Have you, by chance, looked at the mainline ATF side for your devfreq
work in the meantime? I'd happily test. (btw. the linux driver fails
"nicely" there.)

hi again. Do you have any plans regarding the ATF implementation of
IMX_SIP_DDR_DVFS in mainline yet? The kernel is only one half of the
devfreq solution after all. I'm asking just to schedule my work a bit :)

thanks,
                            martin

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