[PATCH 00/11] i.MX8MM power domain support

[Adam Ford]

On Sat, Oct 3, 2020 at 1:08 PM Marek Vasut <marex at denx.de> wrote:
>
> On 10/3/20 8:01 PM, Adam Ford wrote:
> > On Wed, Sep 30, 2020 at 10:50 AM Lucas Stach <l.stach at pengutronix.de> wrote:
> >
> >> Hi all,
> >>
> >> this adds power domain support for the i.MX8MM to the existing GPCv2
> >> driver. It is not complete yet, as it is still missing the VPU and
> >> display power domains, as those require support for the BLK_CTL
> >> regions of the VPUMIX and DISPLAYMIX domains. A Linux driver for
> >> those regions on the i.MX8MP is currently under development and we
> >> plan to use this as a template for the i.MX8MM when the dust has
> >> settled. The changes in this series have been made with this in
> >> mind, so once the BLK_CTL driver exists it should be a matter of
> >> hooking things together via DT, with no further changes required on
> >> the GPCv2 driver side (famous last words).
> >>
> >> Special thanks to Marek Vasut who helped with testing and debugging
> >> of early versions of this code.
> >>
> >>
> > I fully support trying to get this done.  I tried to push something this
> > before, but I was turned down by someone at NXP [1].  I have both a Mini
> > and Nano board at my disposal, so if Nano support isn't there yet, and this
> > driver patch gets accepted, I'll gladly work to help and/or test
> > functionality.
> >
> > [1] - https://lkml.org/lkml/2020/4/30/540
>
> Note that the [1] is using poorly defined and buggy SMC interface to
> TFA, I agree with Lucas that is not the way to go for MX8M. This
> patchset is not using that SMC interface at all, but rather lets Linux
> do the power domain handling, which I think is much better.

I hope you're more successful in convincing NXP of that than Lucas and
I were before.  Our pleas fell on deaf ears.

adam