[PATCH v2 0/2] Introduces MDSYNC support for CS35L45
From: Ricardo Rivera-Matos
Date: Fri Aug 14 2026 - 18:36:04 EST
The CS35L45 has SYNC pin that can be used as a multi
device synchronization (MDSYNC) bus. This pin can send
various message types between Cirrus devices.
This patch series adds support for long and short DSP
messages between CS35L45 devices.
Each device on the SYNC bus must have a unique transmitter
identifier per message type as the bus arbitrates message
priority via this identifier. These identifiers are set by
the introduced devicetree properties. The priority
assignment is intended to be a static system integration
decision.
The relevant receiver controls are introduced as mixer
controls so they are exposed at runtime to be configured
for the appropriate use cases.
Changes since v1:
- Fixed property parsing namespace issue
Ricardo Rivera-Matos (2):
ASoC: dt-bindings: cs35l45: Adds SYNC properties
ASoC: cs35l45: Adds support for SYNC bus
.../bindings/sound/cirrus,cs35l45.yaml | 27 +++++++
sound/soc/codecs/cs35l45-tables.c | 4 +
sound/soc/codecs/cs35l45.c | 77 ++++++++++++++++++-
sound/soc/codecs/cs35l45.h | 23 ++++++
4 files changed, 130 insertions(+), 1 deletion(-)
base-commit: 2792cc1b80b7674cc0751b34a964aad76630c1fa
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2.43.0