Re: [PATCH 4/8] arm64: dts: qcom: x1e80100-dell-xps13-9345: mark l12b and l15b always-on

From: Johan Hovold
Date: Wed Mar 05 2025 - 03:46:48 EST


On Sun, Mar 02, 2025 at 11:04:03PM +0100, Aleksandrs Vinarskis wrote:
> On Thu, 27 Feb 2025 at 09:15, Johan Hovold <johan+linaro@xxxxxxxxxx> wrote:
> >
> > The l12b and l15b supplies are used by components that are not (fully)
> > described (and some never will be) and must never be disabled.
>
> Out of curiosity, what are these components?

A host of things, including pull-ups, level shifters, regulators for
(partially) described devices, but also things like the speakers and
wlan.

> > Mark the regulators as always-on to prevent them from being disabled,
> > for example, when consumers probe defer or suspend.
> >
> > Note that these supplies currently have no consumers described in
> > mainline.

Johan