[PATCH v3 02/18] of: base: add of_parse_phandle_with_optional_args()

[Michael Walle]

Am 2022-11-18 19:51, schrieb Michael Walle:
> Add a new variant of the of_parse_phandle_with_args() which treats the
> cells name as optional. If it's missing, it is assumed that the phandle
> has no arguments.
> 
> Up until now, a nvmem node didn't have any arguments, so all the device
> trees haven't any '#*-cells' property. But there is a need for an
> additional argument for the phandle, for which we need a '#*-cells'
> property. Therefore, we need to support nvmem nodes with and without
> this property.

I've just noticed that this isn't enough. We also need to fix the 
parsing
in drivers/of/property.c, otherwise spurious device links will be 
created
because the phandle argument is treated as a phandle itself.

-michael