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Date: Tue, 31 Mar 2020 13:25:53 +0530 From: Sharat Masetty <smasetty@...eaurora.org> To: freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org Cc: dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, jcrouse@...eaurora.org, mka@...omium.org, sibis@...eaurora.org, saravanak@...gle.com, viresh.kumar@...aro.org, Sharat Masetty <smasetty@...eaurora.org> Subject: [PATCH 5/5] dt-bindings: drm/msm/gpu: Document OPP phandle list for the GPU Update the documentation for listing the multiple optional GPU and the DDR OPP tables to help enable DDR scaling. Signed-off-by: Sharat Masetty <smasetty@...eaurora.org> --- .../devicetree/bindings/display/msm/gpu.txt | 63 +++++++++++++++++++++- 1 file changed, 61 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt index 70025cb..ff3ae1b 100644 --- a/Documentation/devicetree/bindings/display/msm/gpu.txt +++ b/Documentation/devicetree/bindings/display/msm/gpu.txt @@ -21,7 +21,10 @@ Required properties: following devices should not list clocks: - qcom,adreno-630.2 - iommus: optional phandle to an adreno iommu instance -- operating-points-v2: optional phandle to the OPP operating points +- operating-points-v2: optional phandles to the OPP operating point tables + one for the GPU OPPs and the other for the GPU->DDR OPPs. Note that if + multiple OPP tables are specified, the GPU OPP table(considered primary) + should be the first in the phandle list. - interconnects: optional phandle to an interconnect provider. See ../interconnect/interconnect.txt for details. - qcom,gmu: For GMU attached devices a phandle to the GMU device that will @@ -75,7 +78,7 @@ Example a6xx (with GMU): iommus = <&adreno_smmu 0>; - operating-points-v2 = <&gpu_opp_table>; + operating-points-v2 = <&gpu_opp_table>, <&gpu_ddr_bw_opp_table>; interconnects = <&rsc_hlos MASTER_GFX3D &rsc_hlos SLAVE_EBI1>; @@ -85,5 +88,61 @@ Example a6xx (with GMU): memory-region = <&zap_shader_region>; firmware-name = "qcom/LENOVO/81JL/qcdxkmsuc850.mbn" }; + + gpu_opp_table: opp-table { + compatible = "operating-points-v2"; + + opp-430000000 { + opp-hz = /bits/ 64 <430000000>; + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>; + required-opps = <&gpu_ddr_bw_opp6>; + }; + + opp-355000000 { + opp-hz = /bits/ 64 <355000000>; + opp-level = <RPMH_REGULATOR_LEVEL_SVS>; + required-opps = <&gpu_ddr_bw_opp4>; + }; + + opp-267000000 { + opp-hz = /bits/ 64 <267000000>; + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>; + required-opps = <&gpu_ddr_bw_opp4>; + }; + + opp-180000000 { + opp-hz = /bits/ 64 <180000000>; + opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>; + required-opps = <&gpu_ddr_bw_opp2>; + }; + }; + + gpu_ddr_bw_opp_table: gpu-ddr-bw-opp-table { + compatible = "operating-points-v2"; + + gpu_ddr_bw_opp1: opp-300000000 { + opp-peak-kBps =/bits/ 32 <1200000>; + }; + + gpu_ddr_bw_opp2: opp-451000000 { + opp-peak-kBps =/bits/ 32 <1804000>; + }; + + gpu_ddr_bw_opp3: opp-547000000 { + opp-peak-kBps =/bits/ 32 <2188000>; + }; + + gpu_ddr_bw_opp4: opp-768000000 { + opp-peak-kBps =/bits/ 32 <3072000>; + }; + + gpu_ddr_bw_opp5: opp-1017000000 { + opp-peak-kBps =/bits/ 32 <4068000>; + }; + + gpu_ddr_bw_opp6: opp-1353000000 { + opp-peak-kBps =/bits/ 32 <5412000>; + }; + }; }; }; -- 2.7.4
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