Received-SPF: pass (google.com: domain of linux-kernel+bounces-959-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
Date: Fri, 15 Dec 2023 12:55:00 +0000
From: Mark Brown <broonie@kernel.org>
To: Gergo Koteles <soyer@irl.hu>
Cc: Shenghao Ding <shenghao-ding@ti.com>, Kevin Lu <kevin-lu@ti.com>,
	Baojun Xu <baojun.xu@ti.com>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>, Liam Girdwood <lgirdwood@gmail.com>,
	linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org
Subject: Re: [PATCH 03/16] ASoC: tas2781: disable regmap regcache
Message-ID: <5b2eb7eb-761e-406d-8d55-b7ea8cddefa8@sirena.org.uk>
References: <cover.1701906455.git.soyer@irl.hu>
 <21a183b5a08cb23b193af78d4b1114cc59419272.1701906455.git.soyer@irl.hu>
 <0b836c10-b21b-4275-8dd0-254dd5467497@sirena.org.uk>
 <47097f19398808b64f4cc87c2a3c7cc462fb2416.camel@irl.hu>
 <5f3f0306-799f-4f3b-9e05-fbd300c59d5d@sirena.org.uk>
 <b0ab21657f2e4f0825579de97ca012e294d1e743.camel@irl.hu>
 <bf24488f-e4e1-4d3e-a67e-fe74c05acda4@sirena.org.uk>
 <9a2b85a8a19e002093e2471a97850d26e335900f.camel@irl.hu>
Precedence: bulk
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature"; boundary="shU18Ze4Jixd/qwv"
Content-Disposition: inline
In-Reply-To: <9a2b85a8a19e002093e2471a97850d26e335900f.camel@irl.hu>


--shU18Ze4Jixd/qwv
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Fri, Dec 15, 2023 at 02:17:01AM +0100, Gergo Koteles wrote:
> On Thu, 2023-12-07 at 22:39 +0000, Mark Brown wrote:
> > On Thu, Dec 07, 2023 at 10:12:13PM +0100, Gergo Koteles wrote:
> > > On Thu, 2023-12-07 at 20:36 +0000, Mark Brown wrote:

> > > > The code creates the impression that writing to one tas2781 writes to
> > > > all of them, is that not the case?

> > > Yes, the tasdevice_* functions, but the regcache_sync doesn't know
> > > this.

> > So this syncing is done in software not hardware?  My understanding was
> > that this was a hardware thing.

> If you mean that the amplifier does not know that there are several
> programs or configurations or profiles, but only runs the current one,
> yes.

No, I mean that the amplifiers don't talk to each other at a hardware
level and the grouping is all in software.

--shU18Ze4Jixd/qwv
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmV8TKQACgkQJNaLcl1U
h9BTCwf+Pa4K2iMEqoqOz+oegGtyQpvdi/qVCmxb4ZTXaxolUdaQy2PaXjRLd8HX
JvKRqh83icW7itxjaoT9Agm9u5YYtIitbHZa0EZgFPu7W7wbssEMC/PJDVde1FcF
roRv64St87ObvZdagd/XFu2ZGqmFkVbRuvwsiDMAL6XImcCmZPixV8rT73+Vef+U
FmJ7f31B6G07xb2nO5MklywF98z97eXc75Rg8QDleMNPe4/H6bDyLbfTDUF5DAnG
vIzC6Qxm5+dXLLa2V5yZhY0xWOCNJDrmwv7bv0c9M74QigdTTtsI/JmOIj0yJjg/
m5ZFOlNVFJgDi9IzWD5gcsxzhvTymA==
=DJ8M
-----END PGP SIGNATURE-----

--shU18Ze4Jixd/qwv--