diff mbox series

[v4,3/4] dt-bindings: arm-smmu: add compatible string for Marvell Armada-AP806 SMMU-500

Message ID 20200715070649.18733-4-tn@semihalf.com (mailing list archive)
State New, archived
Headers show
Series Add system mmu support for Armada-806 | expand

Commit Message

Tomasz Nowicki July 15, 2020, 7:06 a.m. UTC 
Add specific compatible string for Marvell usage due to errata of
accessing 64bits registers of ARM SMMU, in AP806.

AP806 SoC uses the generic ARM-MMU500, and there's no specific
implementation of Marvell, this compatible is used for errata only.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
---
 Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Robin Murphy July 15, 2020, 10:36 a.m. UTC | #1 
On 2020-07-15 08:06, Tomasz Nowicki wrote:
> Add specific compatible string for Marvell usage due to errata of
> accessing 64bits registers of ARM SMMU, in AP806.
> 
> AP806 SoC uses the generic ARM-MMU500, and there's no specific
> implementation of Marvell, this compatible is used for errata only.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>

Presumably Will can pick up these first 3 patches for 5.9 and #4 can go 
via arm-soc.

Robin.

> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Hanna Hawa <hannah@marvell.com>
> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
> Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
> ---
>   Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> index d7ceb4c34423..156b38924a00 100644
> --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> @@ -38,6 +38,10 @@ properties:
>                 - qcom,sc7180-smmu-500
>                 - qcom,sdm845-smmu-500
>             - const: arm,mmu-500
> +      - description: Marvell SoCs implementing "arm,mmu-500"
> +        items:
> +          - const: marvell,ap806-smmu-500
> +          - const: arm,mmu-500
>         - items:
>             - const: arm,mmu-500
>             - const: arm,smmu-v2
>
Tomasz Nowicki July 16, 2020, 7:27 a.m. UTC | #2 
On 15.07.2020 12:36, Robin Murphy wrote:
> On 2020-07-15 08:06, Tomasz Nowicki wrote:
>> Add specific compatible string for Marvell usage due to errata of
>> accessing 64bits registers of ARM SMMU, in AP806.
>>
>> AP806 SoC uses the generic ARM-MMU500, and there's no specific
>> implementation of Marvell, this compatible is used for errata only.
> 
> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
> 
> Presumably Will can pick up these first 3 patches for 5.9 and #4 can go 
> via arm-soc.

Thanks Robin for review and valuable comments.

Tomasz
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index d7ceb4c34423..156b38924a00 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -38,6 +38,10 @@  properties:
               - qcom,sc7180-smmu-500
               - qcom,sdm845-smmu-500
           - const: arm,mmu-500
+      - description: Marvell SoCs implementing "arm,mmu-500"
+        items:
+          - const: marvell,ap806-smmu-500
+          - const: arm,mmu-500
       - items:
           - const: arm,mmu-500
           - const: arm,smmu-v2