On Mon, Oct 16, 2023 at 1:12 PM Akhil P Oommen <quic_akhilpo@xxxxxxxxxxx> wrote:
>
> On Tue, Sep 26, 2023 at 08:24:37PM +0200, Konrad Dybcio wrote:
> >
> > Some (many?) devices with A635 expect a ZAP shader to be loaded.
> >
> > Set the file name to allow for that.
> >
> > Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
> > ---
> > drivers/gpu/drm/msm/adreno/adreno_device.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > index fa527935ffd4..16527fe8584d 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > @@ -454,6 +454,7 @@ static const struct adreno_info gpulist[] = {
> > .quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT |
> > ADRENO_QUIRK_HAS_HW_APRIV,
> > .init = a6xx_gpu_init,
> > + .zapfw = "a660_zap.mbn",
>
> sc7280 doesn't have a TZ and so no zap shader support. Can we handle
> this using "firmware-name" property in your top level platform dt? Zap
> firmwares are signed with different keys for each OEMs. So there is
> cross-compatibility anyway.
I think this ends up working out because the version of sc7280 that
doesn't have TZ also doesn't have the associated mem-region/etc.. but
maybe we should deprecate the zapfw field as in practice it isn't
useful (ie. always overriden by firmware-name).
Fwiw there are windows laptops with sc7180/sc7280 which do use zap fw.
BR,
-R
>
> -Ahil.
>
> > .hwcg = a660_hwcg,
> > .address_space_size = SZ_16G,
> > .speedbins = ADRENO_SPEEDBINS(
> >
> > --
> > 2.42.0
> >
