From: Lukasz Luba Date: Wed, 9 Dec 2020 11:51:43 +0000 (+0000) Subject: dt-bindings: mali-bifrost: Add dynamic-power-coefficient X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e33dc2f3636749c2f949a59c2ff8acd4a69c9c78;p=linux.git dt-bindings: mali-bifrost: Add dynamic-power-coefficient Add a property dynamic-power-coefficient which allows to register Energy Model for the Mali Bifrost devices. Signed-off-by: Lukasz Luba Link: https://lore.kernel.org/r/20201209115143.15321-3-lukasz.luba@arm.com Signed-off-by: Rob Herring --- diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml index b1844b9c295d8..184492162e7eb 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