RE: [PATCH v10 4/5] dt-bindings: arm-smmu: add binding for Tegra194 SMMU

From: Krishna Reddy
Date: Fri Jul 10 2020 - 16:30:05 EST


Thanks Rob. One question on setting "minItems: ". Please see below.

>> +allOf:
>> + - if:
>> + properties:
>> + compatible:
>> + contains:
>> + enum:
>> + - nvidia,tegra194-smmu
>> + then:
>> + properties:
>> + reg:
>> + minItems: 2
>> + maxItems: 2

>This doesn't work. The main part of the schema already said there's only
>1 reg region. This part is ANDed with that, not an override. You need to add an else clause with 'maxItems: 1' and change the base schema to
>{minItems: 1, maxItems: 2}.

As the earlier version of base schema doesn't have "minItems: " set, should it be set to 0 for backward compatibility? Or can it just be omitted setting in base schema as before?

"else" part to set "maxItems: 1" and setting "maxItems: 2" in base schema is clear to me.


-KR