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ARM: dts: msm: Add GMU CX GenPD instance

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Currently, there is a race condition in GenPD framework where
GPU CX GDSC can remain ON if both GMU and KGSL SMMU devices are
suspending in parallel and are voting on the same power domain.
Use a dedicated power domain for CX GDSC voting as per latest
recommendation.

Change-Id: Iffeb9a7f24a5e3c31a325e57b021f87f8f94c7fb
Signed-off-by: Kamal Agrawal <quic_kamaagra@quicinc.com>
This commit is contained in:
Kamal Agrawal
2024-09-04 20:58:03 +05:30
parent 13196ae45e
commit 3e5e46ddf7
2 changed files with 5 additions and 3 deletions
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5
bindings/adreno.txt
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@@ -80,8 +80,9 @@ Power Domains:
- power-domains: List of PM domain specifiers that reference each power-domain - power-domains: List of PM domain specifiers that reference each power-domain
used by the GPU used by the GPU
- power-domain-names: List of names that represent each of the specifiers in the - power-domain-names: List of names that represent each of the specifiers in the
'power-domains' property. Includes 'gpu_cx' and 'gpu_gx' which 'power-domains' property. Includes 'cx', 'gx' and 'gmu_cx'
represent the power-domains for CX and GX GDSC, respectively. which represent the power-domains for CX GDSC, GX GDSC and
GMU CX GDSC respectively.
IOMMU Data: IOMMU Data:
- iommu: Phandle for the KGSL IOMMU device node - iommu: Phandle for the KGSL IOMMU device node

3
gpu/sun-gpu.dtsi
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@@ -173,8 +173,9 @@
interrupt-names = "hfi", "gmu"; interrupt-names = "hfi", "gmu";
power-domains = <&gpucc GPU_CC_CX_GDSC>, power-domains = <&gpucc GPU_CC_CX_GDSC>,
<&gpucc GPU_CC_CX_GMU_GDSC>,
<&gxclkctl GX_CLKCTL_GX_GDSC>; <&gxclkctl GX_CLKCTL_GX_GDSC>;
power-domain-names = "cx", "gx"; power-domain-names = "cx", "gmu_cx", "gx";
clocks = <&gpucc GPU_CC_CX_GMU_CLK>, clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
<&gpucc GPU_CC_CXO_CLK>, <&gpucc GPU_CC_CXO_CLK>,