Re: [PATCH for-5.10.y] drm/msm/dpu: always use mdp device to scale bandwidth

[Amit Pundir <amit.pundir@linaro.org>]

On Sun, 30 May 2021 at 17:54, Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Fri, May 28, 2021 at 05:01:02PM +0530, Amit Pundir wrote:
> > From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> >
> > [ Upstream commit a670ff578f1fb855fedc7931fa5bbc06b567af22 ]
> >
> > Currently DPU driver scales bandwidth and core clock for sc7180 only,
> > while the rest of chips get static bandwidth votes. Make all chipsets
> > scale bandwidth and clock per composition requirements like sc7180 does.
> > Drop old voting path completely.
> >
> > Tested on RB3 (SDM845) and RB5 (SM8250).
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > Link: https://lore.kernel.org/r/20210401020533.3956787-2-dmitry.baryshkov@linaro.org
> > Signed-off-by: Rob Clark <robdclark@chromium.org>
> > Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
> > ---
> > Fixes dpu_runtime_resume() WARN_ON on db845c/RB3 (sdm845),
> > introduced by the backport of upstream commit 627dc55c273d
> > ("drm/msm/disp/dpu1: icc path needs to be set before dpu
> > runtime resume") on v5.10.y.
> >
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  |  3 +-
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 51 +-----------------------
> >  2 files changed, 2 insertions(+), 52 deletions(-)
>
> What about a version of this for 5.12?  I can't take one for 5.10 and
> not a newer kernel, right?

My bad. I'll verify/smoke-test it on 5.12 as well and resubmit.

Regards,
Amit Pundir

>
> thanks,
>
> greg k-h