linux-kernel - RE: [PATCH v2] media: dt-bindings: samsung,s5p-mfc: Fix iommu properties schemas

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Date: Fri, 15 Dec 2023 10:41:04 +0530
From: "Aakarsh Jain" <aakarsh.jain@...sung.com>
To: "'Rob Herring'" <robh@...nel.org>, "'Mauro Carvalho Chehab'"
	<mchehab@...nel.org>, "'Krzysztof Kozlowski'"
	<krzysztof.kozlowski+dt@...aro.org>, "'Conor Dooley'" <conor+dt@...nel.org>,
	"'Marek Szyprowski'" <m.szyprowski@...sung.com>
Cc: <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2] media: dt-bindings: samsung,s5p-mfc: Fix iommu
 properties schemas



> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: 15 December 2023 01:26
> To: Mauro Carvalho Chehab <mchehab@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley
> <conor+dt@...nel.org>; Marek Szyprowski <m.szyprowski@...sung.com>;
> Aakarsh Jain <aakarsh.jain@...sung.com>
> Cc: linux-media@...r.kernel.org; devicetree@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: [PATCH v2] media: dt-bindings: samsung,s5p-mfc: Fix iommu
> properties schemas
> 
> The iommus and iommu-names property schemas have several issues. First,
> 'iommus-names' in the if/then schemas is the wrong name. As all the names
> are the same, they can be defined at the top level instead. Then the
if/then
> schemas just need to define how many entries. The iommus if/then schemas
> are also redundant. Best I can tell, the desire was to require 2 entries
for
> "samsung,exynos5433-mfc", "samsung,mfc-v5", "samsung,mfc-v6", and
> "samsung,mfc-v8".
> 
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
> v2:
>  - Fix some more cases of iommus-names
> ---
>  .../bindings/media/samsung,s5p-mfc.yaml       | 33 ++++++++-----------
>  1 file changed, 13 insertions(+), 20 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/samsung,s5p-
> mfc.yaml b/Documentation/devicetree/bindings/media/samsung,s5p-
> mfc.yaml
> index 084b44582a43..4c3250985ac3 100644
> --- a/Documentation/devicetree/bindings/media/samsung,s5p-mfc.yaml
> +++ b/Documentation/devicetree/bindings/media/samsung,s5p-mfc.yaml
> @@ -49,7 +49,9 @@ properties:
> 
>    iommu-names:
>      minItems: 1
> -    maxItems: 2
> +    items:
> +      - const: left
> +      - const: right
> 
>    power-domains:
>      maxItems: 1
> @@ -84,7 +86,7 @@ allOf:
>              - const: sclk_mfc
>          iommus:
>            maxItems: 1
> -        iommus-names: false
> +        iommu-names: false
> 
>    - if:
>        properties:
> @@ -102,11 +104,9 @@ allOf:
>              - const: aclk
>              - const: aclk_xiu
>          iommus:
> -          maxItems: 2
> -        iommus-names:
> -          items:
> -            - const: left
> -            - const: right
> +          minItems: 2
> +        iommu-names:
> +          minItems: 2
> 
>    - if:
>        properties:
> @@ -123,11 +123,9 @@ allOf:
>              - const: mfc
>              - const: sclk_mfc
>          iommus:
> -          maxItems: 2
> -        iommus-names:
> -          items:
> -            - const: left
> -            - const: right
> +          minItems: 2
> +        iommu-names:
> +          minItems: 2
> 
>    - if:
>        properties:
> @@ -144,11 +142,9 @@ allOf:
>            items:
>              - const: mfc
>          iommus:
> -          maxItems: 2
> -        iommus-names:
> -          items:
> -            - const: left
> -            - const: right
> +          minItems: 2
> +        iommu-names:
> +          minItems: 2
> 
>    - if:
>        properties:
> @@ -161,9 +157,6 @@ allOf:
>          clocks:
>            minItems: 1
>            maxItems: 2
> -        iommus:
> -          minItems: 1
> -          maxItems: 2
> 
>  examples:
>    - |
> --
> 2.43.0

Reviewed-by: Aakarsh Jain <aakarsh.jain@...sung.com>