On 20.11.19 19:02, Leonard Crestez wrote:
> On 20.11.2019 18:38, Angus Ainslie wrote:
>> On 2019-11-20 08:30, Leonard Crestez wrote:
>>> On 20.11.2019 17:41, Angus Ainslie wrote:
>>>> Hi Leonard,
>>>>
>>>> On 2019-11-20 07:04, Leonard Crestez wrote:
>>>>> 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. >
>>> 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.
>>
>>> 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.)
thanks,
martin
