Re: [PATCH v3 2/2] wl18xx: add basic device-tree support

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On Mon, Mar 9, 2015 at 10:50 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Monday 09 March 2015 09:18:46 Eliad Peller wrote:
>> On Sun, Mar 8, 2015 at 11:53 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>> > On Sunday 08 March 2015 13:13:13 Eliad Peller wrote:
>> >>
>> >> > I've looked up the what boards actually use this data and found that
>> >> > all of them already support booting from DT: some omap2 boards using
>> >> > arch/arm/mach-omap2/pdata-quirks.c to provide the data, and the
>> >> > davinci 850evm. Can you make sure you add the correct data to all
>> >> > of these dts files as part of your series and remove the
>> >> > wl12xx_platform_data references?
>> >>
>> >> AFAICT, these board files add wl12xx platform data, while the new DT
>> >> support is only for wl18xx.
>> >>
>> >
>> > How can you tell the difference? What I see is that omap3pandora
>> > (and nothing else) calls wl1251_set_platform_data(), while
>> > da850-evm and all omap3/omap4 boards use wl12xx_set_platform_data().
>> >
>> > The latter seems to refer to all wl12xx and wl18xx variants except
>> > for wl1251, based on my (very limited) understanding of that code.
>>
>> right.
>> i got mislead because legacy_init_wl12xx() is defined there only for
>> CONFIG_WL12XX (and not for CONFIG_WL18XX).
>> it looks like only "isee,omap3-igep0020-rev-f" and
>> "isee,omap3-igep0020-rev-g" have pdata quirks for wl18xx (and thus
>> initialize the pdata clocks to 0).
>
> Ok.
>
>> sorry for the trivial question, but what's the standard way to submit
>> such patch? should i simply add a third patch to the patchset which
>> removes the pdata quirk and adds the missing dts definition? i don't
>> have such board, so i can only compile-test it.
>
> Yes, I think that would be good. Depending on the complexity of the
> patch, you can do it in multiple ways:
>
> a) one patch to all the dts files, which also removes the
>    legacy_init_wl12xx() infrastructure
>
> b) one patch to add the .dts changes, a second patch to remove the
>    code from pdata-quirks.c and a third to remove the functionality
>    in the driver
>
> c) one patch per board.
>
> I'm fine with any of these, but the omap maintainers might have a
> preference.
>
thanks. i'll go with a single patch then (unless the maintainers
prefer otherwise).

Eliad.
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