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Date:   Wed, 15 Aug 2018 12:13:18 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Doug Anderson <dianders@chromium.org>
Cc:     David Collins <collinsd@codeaurora.org>,
        linux-arm-msm <linux-arm-msm@vger.kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Stephen Boyd <swboyd@chromium.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/4] regulator: core: If consumers don't call
 regulator_set_load() assume max
Message-ID: <20180815111318.GY2414@sirena.org.uk>
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On Tue, Aug 14, 2018 at 04:56:42PM -0700, Doug Anderson wrote:

> IMO about the best we could hope to do would be to map "mode" from
> children to parent.  AKA: perhaps you could assume that if a child is
> in a higher power mode that perhaps a parent should be too?

That's not going to work well - different regulators have wildly
different abilities to deliver current which is the whole reason why
modes are so fuzzy and hard to use in the first place.  A high power
load for a low noise regulator designed to feed analogue circuits might
not even make it out of the lowest power LDO mode of a DCDC designed to
supply the main application processors in the system or (more
relevantly) provide the main step down for a bunch of LDOs.

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