From: Lukasz Luba <lukasz.luba@arm.com> To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: lukasz.luba@arm.com, robh@kernel.org, airlied@linux.ie, daniel@ffwll.ch Subject: [PATCH 2/2] dt-bindings: mali-bifrost: Add dynamic-power-coefficient Date: Wed, 9 Dec 2020 11:51:43 +0000 [thread overview] Message-ID: <20201209115143.15321-3-lukasz.luba@arm.com> (raw) In-Reply-To: <20201209115143.15321-1-lukasz.luba@arm.com> 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
WARNING: multiple messages have this Message-ID (diff)
From: Lukasz Luba <lukasz.luba@arm.com> To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: airlied@linux.ie, lukasz.luba@arm.com Subject: [PATCH 2/2] dt-bindings: mali-bifrost: Add dynamic-power-coefficient Date: Wed, 9 Dec 2020 11:51:43 +0000 [thread overview] Message-ID: <20201209115143.15321-3-lukasz.luba@arm.com> (raw) In-Reply-To: <20201209115143.15321-1-lukasz.luba@arm.com> 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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-12-09 11:53 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-09 11:51 [PATCH 0/2] Add DT bindings with dynamic-power-coefficient for Mali GPUs Lukasz Luba 2020-12-09 11:51 ` Lukasz Luba 2020-12-09 11:51 ` [PATCH 1/2] dt-bindings: mali-midgard: Add dynamic-power-coefficient Lukasz Luba 2020-12-09 11:51 ` Lukasz Luba 2020-12-14 22:06 ` Rob Herring 2020-12-14 22:06 ` Rob Herring 2020-12-09 11:51 ` Lukasz Luba [this message] 2020-12-09 11:51 ` [PATCH 2/2] dt-bindings: mali-bifrost: " Lukasz Luba 2020-12-14 22:06 ` Rob Herring 2020-12-14 22:06 ` Rob Herring
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