On 11/04/2020 18:57, Martin Blumenstingl wrote: > The GPU can be one of the big heat sources on a SoC. Allow the > "#cooling-cells" property to be specified for ARM Mali Utgard GPUs so > the GPU clock speeds (and voltages) can be reduced to prevent a SoC from > overheating. > > Reviewed-by: Qiang Yu <yuq825@xxxxxxxxx> > Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> > --- > Changes since v4 at [0]: > - Added Qiang's Reviewed-by (many thanks) > - re-send because I missed the devicetree mailing list in v4 > > > [0] https://patchwork.kernel.org/patch/11448013/ > > > Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml > index f5401cc8de4a..4869258daadb 100644 > --- a/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml > +++ b/Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml > @@ -107,6 +107,9 @@ properties: > > operating-points-v2: true > > + "#cooling-cells": > + const: 2 > + > required: > - compatible > - reg > @@ -164,6 +167,7 @@ examples: > clocks = <&ccu 1>, <&ccu 2>; > clock-names = "bus", "core"; > resets = <&ccu 1>; > + #cooling-cells = <2>; > }; > > ... > Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
