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| author | Lukasz Luba <lukasz.luba@arm.com> | 2020-12-09 11:51:42 +0000 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2020-12-14 16:07:09 -0600 |
| commit | 23dd6845c2cfc2f4aabe6d21a6ed013e0927bf89 (patch) | |
| tree | cdc94726f0b807cb039dd476ec19edf807a828bf /Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml | |
| parent | 4aa5b78fb5460adbb876e450ec844e7c1991372d (diff) | |
dt-bindings: mali-midgard: Add dynamic-power-coefficient
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>
Link: https://lore.kernel.org/r/20201209115143.15321-2-lukasz.luba@arm.com
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml | 17 |
1 files changed, 17 insertions, 0 deletions
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 |