Re: [PATCH v2 4/7] dt-bindings: net: dsa: mediatek,mt7530: define port binding per compatible

[Krzysztof Kozlowski]

On 13/08/2022 18:44, Arınç ÜNAL wrote:
> Define DSA port binding under each compatible device as each device
> requires different values for certain properties.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
> ---
>  .../bindings/net/dsa/mediatek,mt7530.yaml     | 116 +++++++++++++-----
>  1 file changed, 87 insertions(+), 29 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> index cc87f48d4d07..ff51a2f6875f 100644
> --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> @@ -130,35 +130,6 @@ properties:
>        ethsys.
>      maxItems: 1
>  
> -patternProperties:
> -  "^(ethernet-)?ports$":
> -    type: object
> -
> -    patternProperties:
> -      "^(ethernet-)?port@[0-9]+$":
> -        type: object
> -        description: Ethernet switch ports
> -

my comments from v1 apply here

None of the reasons you said force you to define properties in some
allOf:if:then subblock. These force you to constrain the properties in
allOf:if:then, but not define.


> I can split patternProperties to two sections, but I can't directly
> define the reg property like you put above.

Of course you can and original bindings were doing it.

Let me ask specific questions (yes, no):
1. Are ethernet-ports and ethernet-port present in each variant?
2. Is dsa-port.yaml applicable to each variant? (looks like that - three
compatibles, three all:if:then)
3. If reg appearing in each variant?
4. If above is true, if reg is maximum one item in each variant?

Looking at your patch, I think answer is 4x yes, which means you can
define them in one place and constrain in allOf:if:then, just like all
other schemas, because this one is not different.

Best regards,
Krzysztof