Re: [PATCH v1 4/4] arm64: dts: sdm845: Add zap shader region for GPU

Bjorn Andersson
2019-03-14T05:20:20Z

On Wed 13 Mar 08:42 PDT 2019, Rob Clark wrote:

> On Tue, Mar 12, 2019 at 2:14 PM Jordan Crouse <jcrouse@codeaurora.org> wrote:
> >
> > Some Adreno GPU targets require a special zap shader to bring the GPU
> > out of secure mode. Define a region to allocate and store the zap
> > shader.
> >
> > Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
> > ---
> >
> > arch/arm64/boot/dts/qcom/sdm845.dtsi | 11 +++++++++++
> > 1 file changed, 11 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > index fed7a29..526456d 100644
> > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > @@ -100,6 +100,11 @@
> > no-map;
> > };
> >
> > + zap_shader_region: memory@8c415000 {
> > + reg = <0 0x8c415000 0 0x2000>;
> > + no-map;
> > + };
> > +
> > mpss_region: memory@8e000000 {
> > reg = <0 0x8e000000 0 0x7800000>;
> > no-map;
> > @@ -109,6 +114,8 @@
> > reg = <0 0x96500000 0 0x200000>;
> > no-map;
> > };
> > +
> > +
>
> I guess we don't really need this hunk..
>

I'll trim that as I pick up the patch.

> other than that, the series lgtm
>

Will you pick up patch 1-3 and I'll pick patch 4 through Andy's tree?

Regards,
Bjorn

> BR,
> -R
>
> > };
> >
> > cpus {
> > @@ -1514,6 +1521,10 @@
> >
> > qcom,gmu = <&gmu>;
> >
> > + zap-shader {
> > + memory-region = <&zap_shader_region>;
> > + };
> > +
> > gpu_opp_table: opp-table {
> > compatible = "operating-points-v2";
> >
> > --
> > 2.7.4
> >
> > _______________________________________________
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