From: Svyatoslav Ryhel <clamor95@gmail.com>
To: 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>,
Svyatoslav Ryhel <clamor95@gmail.com>
Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 RFC] ASoC: dt-bindings: Define '#sound-dai-cells' only in the dai-common schema
Date: Sat, 24 Oct 2026 11:43:07 +0300 [thread overview]
Message-ID: <20261024084307.116715-1-clamor95@gmail.com> (raw)
Define the '#sound-dai-cells' property only in the dai-common schema with
an enum of commonly used values and a description on how to use them. Drop
all trivial uses of '#sound-dai-cells' across devices with DAI support,
replacing them with a reference to the dai-common schema.
This should resolve any issues with codecs having multiple DAI cells, no
DAI cells at all, or incorrectly configured sound-dai-cells properties.
Simply include the common schema and switch additionalProperties to
unevaluatedProperties.
Non-trivial '#sound-dai-cells' usages can still be overridden in dedicated
device schemas.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
NOTE: This is currently just a concept. The actual patch will be very large,
as it touches nearly every codec binding. Therefore, I am sending this RFC
to ask if this change would be acceptable in principle, and if so, how it
should best be structured and split. Thanks.
---
Documentation/devicetree/bindings/sound/dai-common.yaml | 6 +++++-
Documentation/devicetree/bindings/sound/linux,bt-sco.yaml | 7 -------
Documentation/devicetree/bindings/sound/linux,spdif.yaml | 5 +----
3 files changed, 6 insertions(+), 12 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/dai-common.yaml b/Documentation/devicetree/bindings/sound/dai-common.yaml
index 1aed2f0f17756..152f319d8f382 100644
--- a/Documentation/devicetree/bindings/sound/dai-common.yaml
+++ b/Documentation/devicetree/bindings/sound/dai-common.yaml
@@ -13,6 +13,10 @@ allOf:
- $ref: component-common.yaml#
properties:
- '#sound-dai-cells': true
+ '#sound-dai-cells':
+ description:
+ Use 0 if only a single DAI cell is available, or 1 if there are multiple
+ DAI cells. For special cases, check the device schema.
+ enum: [0, 1]
additionalProperties: true
diff --git a/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml b/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml
index a67b79cbe006b..f30aea4b545c9 100644
--- a/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml
+++ b/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml
@@ -13,13 +13,6 @@ allOf:
- $ref: dai-common.yaml#
properties:
- '#sound-dai-cells':
- enum:
- - 0
-
- # For Wideband PCM
- - 1
-
compatible:
enum:
- delta,dfbmcs320
diff --git a/Documentation/devicetree/bindings/sound/linux,spdif.yaml b/Documentation/devicetree/bindings/sound/linux,spdif.yaml
index aea6230db54c8..62c035b739d38 100644
--- a/Documentation/devicetree/bindings/sound/linux,spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/linux,spdif.yaml
@@ -18,9 +18,6 @@ properties:
- linux,spdif-dit
- linux,spdif-dir
- "#sound-dai-cells":
- const: 0
-
sound-name-prefix: true
port:
@@ -30,7 +27,7 @@ required:
- "#sound-dai-cells"
- compatible
-additionalProperties: false
+unevaluatedProperties: false
examples:
- |
--
2.53.0
reply other threads:[~2026-10-24 8:43 UTC|newest]
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