diff mbox series

[1/8] dt-bindings: clock: qcom: Allow VDD_GFX supply to GX

Message ID 20231220-sa8295p-gpu-v1-1-d8cdf2257f97@quicinc.com
State New
Headers
Series arm64: dts: qcom: sa8295p: Enable GPU |

Commit Message

Bjorn Andersson Dec. 21, 2023, 3:50 a.m. UTC 
  In some designs the SoC's VDD_GFX pads are supplied by an external
regulator, rather than a power-domain. Allow this to be described in the
GPU clock controller binding.

Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
---
 Documentation/devicetree/bindings/clock/qcom,gpucc.yaml | 3 +++
 1 file changed, 3 insertions(+)

Comments

Dmitry Baryshkov Dec. 21, 2023, 7:03 a.m. UTC | #1 
On Thu, 21 Dec 2023 at 05:51, Bjorn Andersson <quic_bjorande@quicinc.com> wrote:
>
> In some designs the SoC's VDD_GFX pads are supplied by an external
> regulator, rather than a power-domain. Allow this to be described in the
> GPU clock controller binding.
>
> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> ---
>  Documentation/devicetree/bindings/clock/qcom,gpucc.yaml | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> index f369fa34e00c..013ef78d2b31 100644
> --- a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> +++ b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> @@ -53,6 +53,9 @@ properties:
>    power-domains:
>      maxItems: 1
>
> +  vdd-gfx-supply:
> +    description: Regulator supply for the VDD_GFX pads
> +
>    '#clock-cells':
>      const: 1

I think it might be good to restrict this property to a particular
platform (via if:not:properties:compatible:contains
then:properties:vdd-gfx-supply:false).
Dmitry Baryshkov Dec. 21, 2023, 7:10 a.m. UTC | #2 
On Thu, 21 Dec 2023 at 09:03, Dmitry Baryshkov
<dmitry.baryshkov@linaro.org> wrote:
>
> On Thu, 21 Dec 2023 at 05:51, Bjorn Andersson <quic_bjorande@quicinc.com> wrote:
> >
> > In some designs the SoC's VDD_GFX pads are supplied by an external
> > regulator, rather than a power-domain. Allow this to be described in the
> > GPU clock controller binding.
> >
> > Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> > ---
> >  Documentation/devicetree/bindings/clock/qcom,gpucc.yaml | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > index f369fa34e00c..013ef78d2b31 100644
> > --- a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > +++ b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > @@ -53,6 +53,9 @@ properties:
> >    power-domains:
> >      maxItems: 1
> >
> > +  vdd-gfx-supply:
> > +    description: Regulator supply for the VDD_GFX pads
> > +
> >    '#clock-cells':
> >      const: 1
>
> I think it might be good to restrict this property to a particular
> platform (via if:not:properties:compatible:contains
> then:properties:vdd-gfx-supply:false).

After reading the last patches in the series, there is another
suggestion. Maybe we should explicitly say that there should be either
power-domains or vdd-gfx-supply, but not both.
Bjorn Andersson Dec. 21, 2023, 7:16 p.m. UTC | #3 
On Thu, Dec 21, 2023 at 09:10:28AM +0200, Dmitry Baryshkov wrote:
> On Thu, 21 Dec 2023 at 09:03, Dmitry Baryshkov
> <dmitry.baryshkov@linaro.org> wrote:
> >
> > On Thu, 21 Dec 2023 at 05:51, Bjorn Andersson <quic_bjorande@quicinc.com> wrote:
> > >
> > > In some designs the SoC's VDD_GFX pads are supplied by an external
> > > regulator, rather than a power-domain. Allow this to be described in the
> > > GPU clock controller binding.
> > >
> > > Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> > > ---
> > >  Documentation/devicetree/bindings/clock/qcom,gpucc.yaml | 3 +++
> > >  1 file changed, 3 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > > index f369fa34e00c..013ef78d2b31 100644
> > > --- a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > > +++ b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
> > > @@ -53,6 +53,9 @@ properties:
> > >    power-domains:
> > >      maxItems: 1
> > >
> > > +  vdd-gfx-supply:
> > > +    description: Regulator supply for the VDD_GFX pads
> > > +
> > >    '#clock-cells':
> > >      const: 1
> >
> > I think it might be good to restrict this property to a particular
> > platform (via if:not:properties:compatible:contains
> > then:properties:vdd-gfx-supply:false).
> 
> After reading the last patches in the series, there is another
> suggestion. Maybe we should explicitly say that there should be either
> power-domains or vdd-gfx-supply, but not both.
> 

Even on this platform it's not a property of the SoC, but surrounding
design. So I like this proposal.

Thanks,
Bjorn
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
index f369fa34e00c..013ef78d2b31 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,gpucc.yaml
@@ -53,6 +53,9 @@  properties:
   power-domains:
     maxItems: 1
 
+  vdd-gfx-supply:
+    description: Regulator supply for the VDD_GFX pads
+
   '#clock-cells':
     const: 1