From mboxrd@z Thu Jan 1 00:00:00 1970 From: Caesar Wang Subject: [PATCH v2 2/5] dt-bindings: gpu: add a power_model optional properties for MALI Date: Mon, 17 Jul 2017 16:14:28 +0800 Message-ID: <1500279271-15249-3-git-send-email-wxt@rock-chips.com> References: <1500279271-15249-1-git-send-email-wxt@rock-chips.com> Return-path: In-Reply-To: <1500279271-15249-1-git-send-email-wxt@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org To: Heiko Stuebner Cc: linux-rockchip@lists.infradead.org, rocky.hao@rock-chips.com, Caesar Wang , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Rob Herring , David Airlie , Mark Rutland List-Id: dri-devel@lists.freedesktop.org This patch adds the MALI's power-model to set the IPA model to be used for power management. Signed-off-by: Caesar Wang --- Changes in v2: None Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt index a461e47..b616e6b 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -37,6 +37,18 @@ Optional properties: - operating-points-v2 : Refer to Documentation/devicetree/bindings/power/opp.txt for details. +- power_model : Sets power model parameters. Note that this model was designed for the Juno + platform, and may not be suitable for other platforms. A structure containing : + - compatible: Should be arm,mali-simple-power-model + - dynamic-coefficient: Coefficient, in pW/(Hz V^2), which is multiplied + by v^2*f to calculate the dynamic power consumption. + - static-coefficient: Coefficient, in uW/V^3, which is multiplied by + v^3 to calculate the static power consumption. + - ts: An array containing coefficients for the temperature scaling + factor. This is used to scale the static power by a factor of + tsf/1000000, where tsf = ts[3]*T^3 + ts[2]*T^2 + ts[1]*T + ts[0], + and T = temperature in degrees. + - thermal-zone: A string identifying the thermal zone used for the GPU Example for a Mali-T760: -- 2.7.4