linux-kernel - [PATCH 0/3] Add support for an external Master Clock in the Cirrus CS4271 codec

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Message-ID: <20251016130340.1442090-1-herve.codina@bootlin.com>
Date: Thu, 16 Oct 2025 15:03:36 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: David Rhodes <david.rhodes@...rus.com>,
	Richard Fitzgerald <rf@...nsource.cirrus.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Alexander Sverdlin <alexander.sverdlin@...il.com>,
	Nikita Shubin <nikita.shubin@...uefel.me>,
	Axel Lin <axel.lin@...ics.com>,
	Brian Austin <brian.austin@...rus.com>
Cc: linux-sound@...r.kernel.org,
	patches@...nsource.cirrus.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Herve Codina <herve.codina@...tlin.com>
Subject: [PATCH 0/3] Add support for an external Master Clock in the Cirrus CS4271 codec

The Cirrus CS4271 codec can have its Master Clock provided by an
external clock when no crystal is used.

This series adds support for this external Master clock.

The first patch in the series is not related to the clock but fixes an
issue related to module loading and MODULE_DEVICE_TABLE() due to a
driver split between i2c part and spi part.

The next patch document the Master clock in the binding and the last
patch implement this clock handling in the existing driver.

Best regards,
Hervé

Herve Codina (3):
  ASoC: cs4271: Fix cs4271 I2C and SPI drivers automatic module loading
  ASoC: dt-bindings: cirrus,cs4271: Document mclk clock
  ASoC: cs4271: Add support for the external mclk

 .../bindings/sound/cirrus,cs4271.yaml         | 10 +++++
 sound/soc/codecs/cs4271-i2c.c                 |  6 +++
 sound/soc/codecs/cs4271-spi.c                 |  6 +++
 sound/soc/codecs/cs4271.c                     | 43 +++++++++++++------
 sound/soc/codecs/cs4271.h                     |  1 -
 5 files changed, 53 insertions(+), 13 deletions(-)

-- 
2.51.0