On 25/02/2025 16:46, Clement LE GOFFIC wrote:

quoted

Why this is a string not a number?

Where is it used? I don't see usage in the driver, so this does not look
like binding (and DTS is not a driver).

Those files are helpers for the devicetrees and may be included in 
stm32mp*-pinctrl.dtsi files.

So not a binding, see other platforms/header files how it is done.

It is a string because it is an helper for the `function` property of 
`pinmux-node.yaml` which is a string.

I understand that having a number as a string is not easily understandable.
I'll consider it in a V2 by trying to use the `pinmux` property.

Let's keep discussing this part in the bindings doc patch.

Best regards,
Krzysztof