RE: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect power supply assignment
From: Anson Huang
Date: Thu Jan 09 2020 - 03:25:08 EST
Hi, Shawn
> Subject: Re: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect
> power supply assignment
>
> On Mon, Dec 30, 2019 at 09:41:07AM +0800, Anson Huang wrote:
> > The vdd3p0's input should be from external USB VBUS directly, NOT
>
> Shouldn't USB VBUS usually be 5V? It doesn't seem to match 3.0V which is
> suggested by vdd3p0 name.
>
> > PMIC's sw2, so remove the power supply assignment for vdd3p0.
> >
> > Fixes: 93385546ba36 ("ARM: dts: imx6qdl-sabresd: Assign corresponding
> > power supply for LDOs")
>
> Is it only a description correcting or is it fixing a real problem? I'm trying to
> understand it is a 5.5-rc material or can be applied for 5.6.
>
It is fixing a real problem about USB LDO voltage, that is why we noticed this issue.
Thanks,
Anson.