* [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property
@ 2020-04-11 16:57 Martin Blumenstingl
2020-04-15 7:52 ` Neil Armstrong
2020-04-20 19:15 ` Rob Herring
0 siblings, 2 replies; 3+ messages in thread
From: Martin Blumenstingl @ 2020-04-11 16:57 UTC (permalink / raw)
To: robh+dt, dri-devel, devicetree
Cc: linux-kernel, linux-pm, linux-amlogic, Martin Blumenstingl,
Qiang Yu
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@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
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>;
};
...
--
2.26.0
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property
2020-04-11 16:57 [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property Martin Blumenstingl
@ 2020-04-15 7:52 ` Neil Armstrong
2020-04-20 19:15 ` Rob Herring
1 sibling, 0 replies; 3+ messages in thread
From: Neil Armstrong @ 2020-04-15 7:52 UTC (permalink / raw)
To: Martin Blumenstingl, robh+dt, dri-devel, devicetree
Cc: linux-amlogic, Qiang Yu, linux-kernel, linux-pm
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@gmail.com>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> ---
> 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@baylibre.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property
2020-04-11 16:57 [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property Martin Blumenstingl
2020-04-15 7:52 ` Neil Armstrong
@ 2020-04-20 19:15 ` Rob Herring
1 sibling, 0 replies; 3+ messages in thread
From: Rob Herring @ 2020-04-20 19:15 UTC (permalink / raw)
To: Martin Blumenstingl
Cc: robh+dt, dri-devel, devicetree, linux-kernel, linux-pm,
linux-amlogic, Martin Blumenstingl, Qiang Yu
On Sat, 11 Apr 2020 18:57:00 +0200, 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@gmail.com>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> ---
> 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(+)
>
Applied, thanks.
Rob
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-04-11 16:57 [PATCH v5] dt-bindings: gpu: mali-utgard: Add the #cooling-cells property Martin Blumenstingl
2020-04-15 7:52 ` Neil Armstrong
2020-04-20 19:15 ` Rob Herring
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