From: Mark Brown <broonie@kernel.org>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Peter De Schrijver <pdeschrijver@nvidia.com>,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v1 1/6] regulator: core: Introduce API for machine-specific regulators coupling
Date: Wed, 8 May 2019 16:55:42 +0900 [thread overview]
Message-ID: <20190508075542.GV14916@sirena.org.uk> (raw)
In-Reply-To: <20190414175939.12368-2-digetx@gmail.com>
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On Sun, Apr 14, 2019 at 08:59:34PM +0300, Dmitry Osipenko wrote:
> Right now regulator core supports only one type of regulators coupling,
> the "voltage max-spread" which keeps voltages of coupled regulators in a
> given range. A more sophisticated coupling may be required in practice,
> one example is the NVIDIA Tegra SoC's which besides the max-spreading
> have other restrictions that must be adhered. Introduce API that allow
> platforms to provide their own custom coupling algorithms.
This is really concerning since it's jumping straight to open coding the
algorithm in platform specific code which isn't great, especially since
that platform specific code is now going to have to handle all possible
board specific restrictions that might be found on that platform. Why
is it not possible to express the rules that exist in a more general
fashion which can be encoded in drivers? I'm not thrilled about later
patches that export core functionality for platform specific use either.
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next prev parent reply other threads:[~2019-05-08 8:14 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-14 17:59 [RFC PATCH v1 0/6] Introduce machine-specific regulators coupling API Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 1/6] regulator: core: Introduce API for machine-specific regulators coupling Dmitry Osipenko
2019-05-08 7:55 ` Mark Brown [this message]
2019-05-08 13:05 ` Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 2/6] regulator: core: Parse max-spread value per regulator couple Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 3/6] regulator: core: Expose some of core functions Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 4/6] regulator: core Bump MAX_COUPLED to 3 Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 5/6] soc/tegra: regulators: Add regulators coupler for Tegra20 Dmitry Osipenko
2019-05-08 7:57 ` Mark Brown
2019-05-08 13:10 ` Dmitry Osipenko
2019-05-12 9:06 ` Mark Brown
2019-05-12 17:42 ` Dmitry Osipenko
2019-05-13 17:38 ` Mark Brown
2019-05-14 19:12 ` Dmitry Osipenko
2019-04-14 17:59 ` [RFC PATCH v1 6/6] soc/tegra: regulators: Add regulators coupler for Tegra30 Dmitry Osipenko
2019-05-08 7:58 ` Mark Brown
2019-05-08 13:27 ` Dmitry Osipenko
2019-05-12 9:04 ` Mark Brown
2019-05-12 18:29 ` Dmitry Osipenko
2019-05-13 17:40 ` Mark Brown
2019-05-14 18:30 ` Dmitry Osipenko
2019-05-15 9:05 ` Mark Brown
2019-05-15 11:44 ` Dmitry Osipenko
2019-05-15 14:56 ` Mark Brown
2019-05-05 14:57 ` [RFC PATCH v1 0/6] Introduce machine-specific regulators coupling API Dmitry Osipenko
2019-05-08 8:05 ` Mark Brown
2019-05-08 14:03 ` Dmitry Osipenko
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