linux-kernel - Re: [PATCH] drm/msm/a690: Switch to a660

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Date:   Fri, 11 Aug 2023 09:21:22 -0700
From:   Rob Clark <robdclark@...il.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Johan Hovold <johan+linaro@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/msm/a690: Switch to a660_gmu.bin

On Fri, Aug 11, 2023 at 9:11 AM Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
> On 11.08.2023 18:09, Rob Clark wrote:
> > On Fri, Aug 11, 2023 at 9:05 AM Rob Clark <robdclark@...il.com> wrote:
> >>
> >> From: Rob Clark <robdclark@...omium.org>
> >>
> >> There isn't actually a a690_gmu.bin.  But it appears that the normal
> >> a660_gmu.bin works fine.  Normally all the devices within a sub-
> >> generation (or "family") will use the same fw, and a690 is in the a660
> >> family.
> >>
> >
> > possibly this could be considered as:
> >
> > Fixes: 5e7665b5e484 ("drm/msm/adreno: Add Adreno A690 support")
> For a lack of a better response, "meh"

It would help route the change back to 6.4.y so we can stop explaining
to folks that they should create a symlink ;-)

> Other than that:
>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>
> Perhaps we could take this further and do something like
>
> if (failed to load gmu fw)
>         try loading "gmu.bin"

that (loading random fw) sounds like a bad idea.. plus gmu.bin doesn't exist

BR,
-R

>
> Konrad
> >
> >> Signed-off-by: Rob Clark <robdclark@...omium.org>
> >> ---
> >>  drivers/gpu/drm/msm/adreno/adreno_device.c | 2 +-
> >>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> >> index 1ed270dae148..756a9cfe1cbf 100644
> >> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> >> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> >> @@ -478,7 +478,7 @@ static const struct adreno_info gpulist[] = {
> >>                 .family = ADRENO_6XX_GEN4,
> >>                 .fw = {
> >>                         [ADRENO_FW_SQE] = "a660_sqe.fw",
> >> -                       [ADRENO_FW_GMU] = "a690_gmu.bin",
> >> +                       [ADRENO_FW_GMU] = "a660_gmu.bin",
> >>                 },
> >>                 .gmem = SZ_4M,
> >>                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
> >> --
> >> 2.41.0
> >>