linux-kernel - Re: [RFC PATCH v1 6/6] soc/tegra: regulators: Add regulators coupler for Tegra30

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Message-ID: <20190515145635.GG5613@sirena.org.uk>
Date:   Wed, 15 May 2019 15:56:35 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 6/6] soc/tegra: regulators: Add regulators coupler
 for Tegra30

On Wed, May 15, 2019 at 02:44:33PM +0300, Dmitry Osipenko wrote:
> 15.05.2019 12:05, Mark Brown пишет:
> > On Tue, May 14, 2019 at 09:30:05PM +0300, Dmitry Osipenko wrote:

> >> I'm afraid this is just a way of abusing the OPP's. I actually already

> > There's nothing wrong with handling regulators in an OPP, that's a
> > totally normal thing.

> Only if those regulators are directly related to the hardware unit,
> which is not the case here. Regulators coupling is the right abstraction
> that glues things together, there is absolutely no need in trying to
> make workarounds using OPP.

The thing with OPPs is that they are often system level rather than
related to one specific parrt of the device - one of the reasons people
use them is that they eliminate the needs to think about dynamic
combinations of things and instead pick a suitable configuration off a
relatively short menu.  This makes both validation and runtime easier.

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