[linux-sunxi] Re: [PATCH v5 8/8] ARM: sun7i/sun4i: dt: Add AXP209 support to various boards

Carlo Caione carlo at caione.org
Thu May 8 01:17:16 PDT 2014

On Thu, May 8, 2014 at 4:53 AM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:


> What I mean is that no information is still better than wrong
> informations. If you don't have the schematics, then don't do anything
> on this boards. Hopefully, someone with more infos on this will know
> what to do.

I partially agree here. Not specifying the voltage range for the
regulators but only keeping them always-on from a practical point of
view means that we do nothing with those regulators (see also

> Moreover, I have the feeling that you just copy pasted all the
> informations on this patch. The first example I'm seeing is the
> cubieboard, for which we do have the schematics, and this patch says
> that ldo4 is used for HDMI, and that is required to stays always on,
> while LDO4 doesn't seem to be used at all, and that HDMI takes
> directly its input source from DC-5V.

The names for the regulators are taken from the original Allwinner
driver and (of course) they can have nothing to do with the function
they have in the board. I agree that this could be misleading so I'll
change them with more general names. Concerning LDO4 that is always
on, it was off until this v4, but I changed it back to have one common
DT representation among all the boards.

> I guess you need some more refining on this patch.

Ok, I'll submit a v6 only for this patch.


Carlo Caione

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