Re: [PATCH v2 2/3] ARM: dts: sunxi: add support for Orange Pi Zero board

[Maxime Ripard]

On Mon, Nov 28, 2016 at 12:29:07AM +0000, André Przywara wrote:
> > Something more interesting happened.
> > 
> > Xunlong made a add-on board for Orange Pi Zero, which exposes the
> > two USB Controllers exported at expansion bus as USB Type-A
> > connectors.
> > 
> > Also it exposes a analog A/V jack and a microphone.
> > 
> > Should I enable {e,o}hci{2.3} in the device tree?
> 
> Actually we should do this regardless of this extension board. The USB
> pins are not multiplexed and are exposed on user accessible pins (just
> not soldered, but that's a detail), so I think they qualify for DT
> enablement. And even if a user can't use them, it doesn't hurt to have
> them (since they are not multiplexed).

My main concern about this is that we'll leave regulators enabled by
default, for a minority of users. And that minority will prevent to do
a proper power management when the times come since we'll have to keep
that behaviour forever.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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