Re: [PATCH 1/3] mtd: create a partition type device tree binding

[Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>]

On Fri, Nov 6, 2015 at 3:13 PM, Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> On Fri, Oct 30, 2015 at 12:51 PM, Brian Norris
> <computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> On Fri, Oct 30, 2015 at 03:00:57PM +0100, Linus Walleij wrote:
>>> On Thu, Oct 29, 2015 at 5:29 PM, Brian Norris
>>> <computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>>
>>> >> +Required properties:
>>> >> +- partition-type : the type of partition. Only one type can be specified.
>>> >
>>> > You're supporting this as a list property (for future expansion,
>>> > presumably), so I can only assume the "only one type" is referring to
>>> > the number of different parsers available currently, not the behavior of
>>> > the property itself?
>>>
>>> I was thinking that it would not be a list actually.

Why not? It is (was) not uncommon to have multiple partition table types on
hard disks (e.g. bsd disklabel and msdos and/or amiga rdb).

>>> The reason being that if you're anyways going to the trouble of
>>> specifying exactly what partition type is going to be used, you're
>>> not really interested in specifying a few different ones, you know
>>> exactly what type it is going to be.
>>
>> OK, that makes sense. I think it's still *possible* that a board might
>> have the option of more than one partition parser, and so they might
>> just include both in the DTS, but that seems unlikely and so it makes
>> sense not to (over)engineer for it before it's needed. Anyway, your
>> binding can easily be expanded in the future if needed.
>
> Since we now have partitions contained in a sub node, how about using
> compatible for that sub node instead.

And "compatible" supports a list of multiple values.

BTW, this means it also (can) becomes more generic. Will it be applicable
to other block devices (e.g. hard disks), too?
Integration with block/partitions?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds