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

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Message-ID: <20170630121451.f2voycbmnstjpugt@sirena.org.uk>
Date:   Fri, 30 Jun 2017 13:14:51 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Waldemar Rymarkiewicz <waldemar.rymarkiewicz@...il.com>
Cc:     linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        "Bartholomae, Thomas" <t.bartholomae@...el.com>
Subject: Re: Where to update regulator register with initial voltage set by HW

On Fri, Jun 30, 2017 at 01:37:32PM +0200, Waldemar Rymarkiewicz wrote:

> I am not sure if I understand. Do you mean, a regulator should
> determine a voltage and update a register with a right selector when
> system boots, so the regulator framework reading reg register knows
> actual voltage?

Just don't provide a default value for the cache, regmap will do a
physical read if there's nothing in the cache for that register and
everything will work transparently.

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