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dt-bindings: mali-midgard: Add dynamic-power-coefficient

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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>
This commit is contained in:
Lukasz Luba 2020-12-09 11:51:42 +00:00 committed by Rob Herring
parent 4aa5b78fb5
commit 23dd6845c2
1 changed files with 17 additions and 0 deletions
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17
Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
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@ -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