Re: Mixed types of values inside a single property

[Andy Shevchenko <andriy.shevchenko@intel.com>]

On Mon, Nov 21, 2022 at 03:23:53PM +0100, Krzysztof Kozlowski wrote:
> On 21/11/2022 15:11, Andy Shevchenko wrote:
> > On Mon, Nov 21, 2022 at 02:52:37PM +0100, Krzysztof Kozlowski wrote:
> >> On 21/11/2022 13:59, Andy Shevchenko wrote:
> >>>
> >>> Hi, Rob and Krzysztof!
> >>>
> >>> Today on SO one question [1] was popped up, and I, remembering a bit of
> >>> the code of device properties in the Linux kernel, was a bit surprised of it
> >>> in a way that reading DT specification (0.4-rc1 as of today) doesn't clarify
> >>> that either.
> >>>
> >>> Can the specification be a bit more clear about that? Or is it me and the OP of
> >>> that question who missed something in the DT spec?
> >>>
> >>> [1]: https://stackoverflow.com/questions/74517569/reading-tuples-in-a-devicetree
> >>
> >> I saw question on Stackoverflow and I saw there answers, but what is the
> >> question to us?
> > 
> > Does the specification allows mixed types of the values in the same property?
> > Because reading it doesn't give a hint.
> 
> I think DT spec allows it ("Format is specific to the property. See the
> property definition.")

And the quoted sentence confuses me. Is it related to _defined_ only properties
(that are in the same document) or is it to any property, then what does the
second part actually mean in the latter case: "see the property definition".
Where?

It might be though it's lack of my understanding the English language
(not a native speaker).

> but DT schema mostly not (finite list of property
> types). To some level DT schema accepts mixes, e.g. phandle-array
> containing phandle and offsets, but that's because phandle is actually
> also a number (dtschema/schemas/types.yaml).

-- 
With Best Regards,
Andy Shevchenko