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authorKonrad Dybcio <konrad.dybcio@linaro.org>2023-12-04 15:55:20 +0300
committerWill Deacon <will@kernel.org>2023-12-12 15:26:20 +0300
commit4fff78dc2490fc0c67669c610dbc42921dd23a1c (patch)
treee7d7dd1117cc9b7e3aa744653802a1b07940e4f7 /Documentation/devicetree/bindings/iommu/arm,smmu.yaml
parentfa27b35c9102e3e2b75455517f7091b294cc0552 (diff)
downloadlinux-4fff78dc2490fc0c67669c610dbc42921dd23a1c.tar.xz
dt-bindings: arm-smmu: Document SM8[45]50 GPU SMMU
SM8450 and SM8550 both use a Qualcomm-modified MMU500 for their GPU. In both cases, it requires a set of clocks to be enabled. Describe that. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20231127-topic-a7xx_dt-v2-1-2a437588e563@linaro.org Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu/arm,smmu.yaml')
-rw-r--r--Documentation/devicetree/bindings/iommu/arm,smmu.yaml48
1 files changed, 46 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index a5adfba93924..a4042ae24770 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -91,6 +91,8 @@ properties:
- qcom,sm8150-smmu-500
- qcom,sm8250-smmu-500
- qcom,sm8350-smmu-500
+ - qcom,sm8450-smmu-500
+ - qcom,sm8550-smmu-500
- const: qcom,adreno-smmu
- const: qcom,smmu-500
- const: arm,mmu-500
@@ -479,6 +481,50 @@ allOf:
- description: Voter clock required for HLOS SMMU access
- description: Interface clock required for register access
+ - if:
+ properties:
+ compatible:
+ const: qcom,sm8450-smmu-500
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: gmu
+ - const: hub
+ - const: hlos
+ - const: bus
+ - const: iface
+ - const: ahb
+
+ clocks:
+ items:
+ - description: GMU clock
+ - description: GPU HUB clock
+ - description: HLOS vote clock
+ - description: GPU memory bus clock
+ - description: GPU SNoC bus clock
+ - description: GPU AHB clock
+
+ - if:
+ properties:
+ compatible:
+ const: qcom,sm8550-smmu-500
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: hlos
+ - const: bus
+ - const: iface
+ - const: ahb
+
+ clocks:
+ items:
+ - description: HLOS vote clock
+ - description: GPU memory bus clock
+ - description: GPU SNoC bus clock
+ - description: GPU AHB clock
+
# Disallow clocks for all other platforms with specific compatibles
- if:
properties:
@@ -498,8 +544,6 @@ allOf:
- qcom,sdx65-smmu-500
- qcom,sm6350-smmu-500
- qcom,sm6375-smmu-500
- - qcom,sm8450-smmu-500
- - qcom,sm8550-smmu-500
- qcom,sm8650-smmu-500
- qcom,x1e80100-smmu-500
then: