From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
To: Herve Codina <herve.codina@bootlin.com>
Cc: linux-sound@vger.kernel.org, patches@opensource.cirrus.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
David Rhodes <david.rhodes@cirrus.com>,
Richard Fitzgerald <rf@opensource.cirrus.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Nikita Shubin <nikita.shubin@maquefel.me>,
Axel Lin <axel.lin@ingics.com>,
Brian Austin <brian.austin@cirrus.com>
Subject: Re: [PATCH v2 4/4] ASoC: cs4271: Add support for the external mclk
Date: Wed, 29 Oct 2025 12:24:47 +0100 [thread overview]
Message-ID: <3e2ebf04f53cbf801e13fd808d8438c6d2cee412.camel@gmail.com> (raw)
In-Reply-To: <20251029093921.624088-5-herve.codina@bootlin.com>
Hi!
On Wed, 2025-10-29 at 10:39 +0100, Herve Codina wrote:
> The mclk (master clock) of the cs4271 codec can be an input clock.
>
> In this case the connected clock needs to be enabled outside of any
> audio stream. Indeed, this clock is needed for i2c communication.
>
> Add support of this clock and enable it before the first i2c transfer.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> ---
> sound/soc/codecs/cs4271.c | 29 ++++++++++++++++++++++++++---
> 1 file changed, 26 insertions(+), 3 deletions(-)
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
--
Alexander Sverdlin.
next prev parent reply other threads:[~2025-10-29 11:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-29 9:39 [PATCH v2 0/4] Add support for an external Master Clock in the Cirrus CS4271 codec Herve Codina
2025-10-29 9:39 ` [PATCH v2 1/4] ASoC: cs4271: Fix cs4271 I2C and SPI drivers automatic module loading Herve Codina
2025-10-29 11:20 ` Alexander Sverdlin
2025-10-30 13:43 ` Herve Codina
2025-10-30 13:52 ` Mark Brown
2025-10-30 13:54 ` Alexander Sverdlin
2025-10-30 14:01 ` Alexander Sverdlin
2025-10-29 9:39 ` [PATCH v2 2/4] ASoC: cs4271: Disable regulators in component_probe() error path Herve Codina
2025-10-29 11:14 ` Alexander Sverdlin
2025-10-29 9:39 ` [PATCH v2 3/4] ASoC: dt-bindings: cirrus,cs4271: Document mclk clock Herve Codina
2025-10-29 9:39 ` [PATCH v2 4/4] ASoC: cs4271: Add support for the external mclk Herve Codina
2025-10-29 11:24 ` Alexander Sverdlin [this message]
2025-10-30 16:50 ` (subset) [PATCH v2 0/4] Add support for an external Master Clock in the Cirrus CS4271 codec Mark Brown
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