[linux-sunxi] Re: [PATCH 5/5] ARM: dts: sun7i: Add dts file for Wits Pro A20 DKT

Chen-Yu Tsai wens at csie.org
Fri Jul 31 10:28:01 PDT 2015


On Sat, Aug 1, 2015 at 12:56 AM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> On Fri, Jul 31, 2015 at 06:25:29PM +0800, Chen-Yu Tsai wrote:
>> > Note that it's a bit of a pain for now to support such cases, as
>> > there's nothing to tie something from the DT to an SDIO device. I
>> > don't have a better solution than marking it always-on at the moment,
>> > with a big FIXME comment on top... :/
>>
>> One could use the mmc-pwr-seq stuff. I don't know if it has been
>> extended for multiple GPIOs, not that you would need it in this use
>> case.
>
> It doesn't really improve the situation. It doesn't handle the
> regulators, it doesn't allow the real driver to get its resources
> either, basically, it's just a hack.

Yeah, it's still lacking support for upstream regulators, like LDOs
from the PMICs.

>> Maybe we ought to fix up the other ones, like the CubieTruck and A31
>> Hummingbird?
>
> I'll do it.

Thanks


ChenYu



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