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dt-bindings: arm-smmu: fix clocks/clock-names schema

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Rework clocks/clock-names properties schema to properly describe
possible usage cases.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221114170635.1406534-3-dmitry.baryshkov@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Dmitry Baryshkov 2022-11-14 20:06:27 +03:00 committed by Will Deacon
parent dbf88f7435
commit 982295bfe3
1 changed files with 121 additions and 8 deletions
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129
Documentation/devicetree/bindings/iommu/arm,smmu.yaml
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@ -161,16 +161,12 @@ properties:
present in such cases.
clock-names:
items:
- const: bus
- const: iface
minItems: 1
maxItems: 7
clocks:
items:
- description: bus clock required for downstream bus access and for the
smmu ptw
- description: interface clock required to access smmu's registers
through the TCU's programming interface.
minItems: 1
maxItems: 7
power-domains:
maxItems: 1
@ -220,6 +216,123 @@ allOf:
reg:
maxItems: 1
- if:
properties:
compatible:
contains:
enum:
- qcom,msm8998-smmu-v2
- qcom,sdm630-smmu-v2
then:
anyOf:
- properties:
clock-names:
items:
- const: bus
clocks:
items:
- description: bus clock required for downstream bus access and for
the smmu ptw
- properties:
clock-names:
items:
- const: iface
- const: mem
- const: mem_iface
clocks:
items:
- description: interface clock required to access smmu's registers
through the TCU's programming interface.
- description: bus clock required for memory access
- description: bus clock required for GPU memory access
- properties:
clock-names:
items:
- const: iface-mm
- const: iface-smmu
- const: bus-mm
- const: bus-smmu
clocks:
items:
- description: interface clock required to access mnoc's registers
through the TCU's programming interface.
- description: interface clock required to access smmu's registers
through the TCU's programming interface.
- description: bus clock required for downstream bus access
- description: bus clock required for the smmu ptw
- if:
properties:
compatible:
contains:
enum:
- qcom,msm8996-smmu-v2
- qcom,sc7180-smmu-v2
- qcom,sdm845-smmu-v2
then:
properties:
clock-names:
items:
- const: bus
- const: iface
clocks:
items:
- description: bus clock required for downstream bus access and for
the smmu ptw
- description: interface clock required to access smmu's registers
through the TCU's programming interface.
- if:
properties:
compatible:
contains:
const: qcom,sc7280-smmu-500
then:
properties:
clock-names:
items:
- const: gcc_gpu_memnoc_gfx_clk
- const: gcc_gpu_snoc_dvm_gfx_clk
- const: gpu_cc_ahb_clk
- const: gpu_cc_hlos1_vote_gpu_smmu_clk
- const: gpu_cc_cx_gmu_clk
- const: gpu_cc_hub_cx_int_clk
- const: gpu_cc_hub_aon_clk
clocks:
items:
- description: GPU memnoc_gfx clock
- description: GPU snoc_dvm_gfx clock
- description: GPU ahb clock
- description: GPU hlos1_vote_GPU smmu clock
- description: GPU cx_gmu clock
- description: GPU hub_cx_int clock
- description: GPU hub_aon clock
- if:
properties:
compatible:
contains:
enum:
- qcom,sm8150-smmu-500
- qcom,sm8250-smmu-500
then:
properties:
clock-names:
items:
- const: ahb
- const: bus
- const: iface
clocks:
items:
- description: bus clock required for AHB bus access
- description: bus clock required for downstream bus access and for
the smmu ptw
- description: interface clock required to access smmu's registers
through the TCU's programming interface.
examples:
- |+
/* SMMU with stream matching or stream indexing */