Re: Phandles

[Krzysztof Kozlowski <krzk@kernel.org>]

On 12/04/2026 18:37, Kyle Bonnici wrote:
>>>> Case 1:
>>>> / {
>>>>     node1 {
>>>>          pwms = <1 &pwm0 1 20 PWM_POLARITY_NORMAL>;
>>>>
>>>>          Here the first cell '1' is not a phandle.  
>>>
>>> Here the compiler is making an assumption here that all `pwms` properties must be specifier properties and all use `pwm` specifier.
>>
>> I think the purpose of 'select: true' is to have the binding always applied:
>>  https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/pwm/pwm-consumer.yaml#L15
>>
> 
> 
> I’m having trouble finding where the Devicetree Specification (v0.4) mandates that all binding systems must extend dt-schema. 
> Since this requirement isn't explicitly in the spec, it follows that the WARNING_PROPERTY_PHANDLE_CELLS validation belongs in dt-validate rather than within dtc itself.


So you want to have a property with values not being phandle? The spec
defines that properties like "pwm" must contain "value of properties
with a phandle value type". Therefore what does '1' represents in your
example?

Best regards,
Krzysztof