[PATCH 0/2] Add DT bindings with dynamic-power-coefficient for Mali GPUs

[PATCH 0/2] Add DT bindings with dynamic-power-coefficient for Mali GPUs

[Lukasz Luba]

Hi all,

The patch set aims to add a new property dynamic-power-coefficient to Mali GPU
DT bindings. This property is known from CPUs and they are both aligned. It
is used for Energy Model registration.

Regards,
Lukasz Luba

Lukasz Luba (2):
  dt-bindings: mali-midgard: Add dynamic-power-coefficient
  dt-bindings: mali-bifrost: Add dynamic-power-coefficient

 .../bindings/gpu/arm,mali-bifrost.yaml          | 17 +++++++++++++++++
 .../bindings/gpu/arm,mali-midgard.yaml          | 17 +++++++++++++++++
 2 files changed, 34 insertions(+)

-- 
2.17.1

[PATCH 1/2] dt-bindings: mali-midgard: Add dynamic-power-coefficient

[Lukasz Luba]

Add a property dynamic-power-coefficient which allows to register Energy
Model for the Mali Midgard devices.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 .../bindings/gpu/arm,mali-midgard.yaml          | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
index e9c42b59f30f..696c17aedbbe 100644
--- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
+++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
@@ -90,6 +90,23 @@ properties:
 
   dma-coherent: true
 
+  dynamic-power-coefficient:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description:
+      A u32 value that represents the running time dynamic
+      power coefficient in units of uW/MHz/V^2. The
+      coefficient can either be calculated from power
+      measurements or derived by analysis.
+
+      The dynamic power consumption of the GPU is
+      proportional to the square of the Voltage (V) and
+      the clock frequency (f). The coefficient is used to
+      calculate the dynamic power as below -
+
+      Pdyn = dynamic-power-coefficient * V^2 * f
+
+      where voltage is in V, frequency is in MHz.
+
 required:
   - compatible
   - reg
-- 
2.17.1

[PATCH 2/2] dt-bindings: mali-bifrost: Add dynamic-power-coefficient

[Lukasz Luba]

Add a property dynamic-power-coefficient which allows to register Energy
Model for the Mali Bifrost devices.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 .../bindings/gpu/arm,mali-bifrost.yaml          | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
index b1844b9c295d..184492162e7e 100644
--- a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
+++ b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
@@ -52,6 +52,23 @@ properties:
   "#cooling-cells":
     const: 2
 
+  dynamic-power-coefficient:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description:
+      A u32 value that represents the running time dynamic
+      power coefficient in units of uW/MHz/V^2. The
+      coefficient can either be calculated from power
+      measurements or derived by analysis.
+
+      The dynamic power consumption of the GPU is
+      proportional to the square of the Voltage (V) and
+      the clock frequency (f). The coefficient is used to
+      calculate the dynamic power as below -
+
+      Pdyn = dynamic-power-coefficient * V^2 * f
+
+      where voltage is in V, frequency is in MHz.
+
 required:
   - compatible
   - reg
-- 
2.17.1

Re: [PATCH 1/2] dt-bindings: mali-midgard: Add dynamic-power-coefficient

[Rob Herring]

On Wed, 09 Dec 2020 11:51:42 +0000, Lukasz Luba wrote:
> Add a property dynamic-power-coefficient which allows to register Energy
> Model for the Mali Midgard devices.
> 
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
> ---
>  .../bindings/gpu/arm,mali-midgard.yaml          | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 

Applied, thanks!

Re: [PATCH 2/2] dt-bindings: mali-bifrost: Add dynamic-power-coefficient

[Rob Herring]

On Wed, 09 Dec 2020 11:51:43 +0000, Lukasz Luba wrote:
> Add a property dynamic-power-coefficient which allows to register Energy
> Model for the Mali Bifrost devices.
> 
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
> ---
>  .../bindings/gpu/arm,mali-bifrost.yaml          | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 

Applied, thanks!