linux-kernel - Re: [PATCH 1/2] ASoC: add support for TAS5805M digital amplifier

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Message-ID: <Yd85bjKEX9JnoOlI@sirena.org.uk>
Date:   Wed, 12 Jan 2022 20:26:22 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Daniel Beer <daniel.beer@...rinstitute.com>
Cc:     alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andy Liu <andy-liu@...com>,
        Derek Simkowiak <derek.simkowiak@...rinstitute.com>,
        Rob Herring <robh+dt@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [PATCH 1/2] ASoC: add support for TAS5805M digital amplifier

On Wed, Jan 12, 2022 at 08:28:06AM +1300, Daniel Beer wrote:

> The blob of register writes we get given from PPC3 contains a whole lot
> of explicit page and book changes, and there's not an easy way to tell
> regmap about this, as far as I know. Do you think it's acceptable to
> stick with explicit paging for this reason, or is there a way to make
> this work with regmap's paging?

That's probably fine.  It's *really* hard to get enthusiastic about this
system design TBH, just injecting a stream of unverified register writes 
is going to make the driver very fragile against changes but I'm not
sure you're going to much better there.

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