linux-kernel - Re: [PATCH 2/2] dt-bindings: regulator: act8865 regulator modes and suspend states

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Message-ID: <20190812111140.GG4592@sirena.co.uk>
Date:   Mon, 12 Aug 2019 12:11:40 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Raag Jadav <raagjadav@...il.com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [PATCH 2/2] dt-bindings: regulator: act8865 regulator modes and
 suspend states

On Sat, Aug 10, 2019 at 01:18:55PM +0530, Raag Jadav wrote:

> + * ACT8865 regulators as follows:
> + * ACT8865_REGULATOR_MODE_FIXED:	It is specific to DCDC regulators and it
> + *					specifies the usage of fixed-frequency
> + *					PWM.

Ah, _FIXED doesn't mean what it sounded like - this should map to _FAST.
The reason you use forced PWM is to avoid any delay in the hardware
figuring out that it needs to go into PWM mode in the case of rapid load
changes.

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