linux-kernel - Re: [PATCH v2 5/5] ASoC: cs35l45: Hibernation support

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Message-ID: <20230306093537.GQ68926@ediswmail.ad.cirrus.com>
Date:   Mon, 6 Mar 2023 09:35:37 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Vlad Karpovich <vkarpovi@...nsource.cirrus.com>
CC:     James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, <alsa-devel@...a-project.org>,
        <patches@...nsource.cirrus.com>, <linux-kernel@...r.kernel.org>,
        Ricardo Rivera-Matos <rriveram@...nsource.cirrus.com>
Subject: Re: [PATCH v2 5/5] ASoC: cs35l45: Hibernation support

On Fri, Mar 03, 2023 at 01:21:51PM -0600, Vlad Karpovich wrote:
> From: "Vlad.Karpovich" <vkarpovi@...nsource.cirrus.com>
> 
> Adds support for a low-power Hibernation State.
> In this state, all register contents are lost, but the contents of
> RAM are retained. In the Hibernation State, only always-on digital
> functions to support wake-up are enabled.

Yeah perhaps clarify that this relates to the DSP, something like
"Add support for a low-power hibernation state for the DSP. In
this state the DSP RAM contents are maintained, such that
firmware does not need to be re-downloaded, but the rest of the
chip's register state is lost."

But rest of it looks good to me:

Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Thanks,
Charles