Re: [RFC v3 01/18] dt-bindings: clock: Add VO subsystem clock controller support

[Krzysztof Kozlowski]

On 21/01/2025 22:29, Michal Wilczynski wrote:
> 
> 
> On 1/21/25 10:47, Krzysztof Kozlowski wrote:
>> On Mon, Jan 20, 2025 at 06:20:54PM +0100, Michal Wilczynski wrote:
>>>  properties:
>>>    compatible:
>>> -    const: thead,th1520-clk-ap
>>> +    enum:
>>> +      - thead,th1520-clk-ap
>>> +      - thead,th1520-clk-vo
>>>  
>>>    reg:
>>>      maxItems: 1
>>>  
>>>    clocks:
>>>      items:
>>> -      - description: main oscillator (24MHz)
>>> +      - description: main oscillator (24MHz) or CLK_VIDEO_PLL
>>
>> thead,th1520-clk-ap gets also VIDEO_PLL? Aren't both serving the same
>> purpose from these devices point of view? Bindings are telling what this
>> device is expecting.
> 
> Since thead,th1520-clk-ap configures PLL clocks it takes the oscillator
> 24MHz as an input, so no.
> 
> The VO subsystem takes as an input VIDEO_PLL that's configured by the
> AP.

I understood that, but you really did not answer to my question. How is
the input called? Not how is the clock called.

> 
> I could do something like this if this needs to be formally expressed in
> the schema:

It is enough to put it in description.



Best regards,
Krzysztof