linux-kernel - Re: Where to update regulator register with initial voltage set by HW

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Message-ID: <20170703153635.wpmyvbqjw3sik45d@sirena.org.uk>
Date:   Mon, 3 Jul 2017 16:36:35 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Waldemar Rymarkiewicz <waldemar.rymarkiewicz@...il.com>
Cc:     "Bartholomae, Thomas" <t.bartholomae@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Subject: Re: Where to update regulator register with initial voltage set by HW

On Mon, Jul 03, 2017 at 05:33:03PM +0200, Waldemar Rymarkiewicz wrote:

> I've asked also on TI forum if this is typical to the regulator not to
> determine the startup voltage but still waiting for feedback. Anyway,
> if this is the case I guess a driver is a good place to update
> register before we register to the regulator framework.

It's really unusual to have a device that has the voltage changable by
register write at runtime where the current state can't be read back.

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