linux-kernel - [PATCH 1/7] ASoC: dt-bindings: convert tdm-slot to YAML

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Message-Id: <20251209-tdm-idle-slots-v1-1-38dabf6bc01e@gmail.com>
Date: Tue, 09 Dec 2025 19:31:14 +1000
From: James Calligeros <jcalligeros99@...il.com>
To: 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>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, 
 Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>, 
 Shengjiu Wang <shengjiu.wang@....com>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>, Shenghao Ding <shenghao-ding@...com>, 
 Kevin Lu <kevin-lu@...com>, Baojun Xu <baojun.xu@...com>
Cc: linux-sound@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, asahi@...ts.linux.dev, 
 James Calligeros <jcalligeros99@...il.com>
Subject: [PATCH 1/7] ASoC: dt-bindings: convert tdm-slot to YAML

This schema was still in plaintext form. Convert to YAML format.

Signed-off-by: James Calligeros <jcalligeros99@...il.com>
---
 .../bindings/sound/tdm-slot.txt          | 29 ---------------------
 .../bindings/sound/tdm-slot.yaml         | 34 +++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 29 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/tdm-slot.txt b/Documentation/devicetree/bindings/sound/tdm-slot.txt
deleted file mode 100644
index 4bb513ae62fc..000000000000
--- a/Documentation/devicetree/bindings/sound/tdm-slot.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-TDM slot:
-
-This specifies audio DAI's TDM slot.
-
-TDM slot properties:
-dai-tdm-slot-num : Number of slots in use.
-dai-tdm-slot-width : Width in bits for each slot.
-dai-tdm-slot-tx-mask : Transmit direction slot mask, optional
-dai-tdm-slot-rx-mask : Receive direction slot mask, optional
-
-For instance:
-	dai-tdm-slot-num = <2>;
-	dai-tdm-slot-width = <8>;
-	dai-tdm-slot-tx-mask = <0 1>;
-	dai-tdm-slot-rx-mask = <1 0>;
-
-And for each specified driver, there could be one .of_xlate_tdm_slot_mask()
-to specify an explicit mapping of the channels and the slots. If it's absent
-the default snd_soc_of_xlate_tdm_slot_mask() will be used to generating the
-tx and rx masks.
-
-For snd_soc_of_xlate_tdm_slot_mask(), the tx and rx masks will use a 1 bit
-for an active slot as default, and the default active bits are at the LSB of
-the masks.
-
-The explicit masks are given as array of integers, where the first
-number presents bit-0 (LSB), second presents bit-1, etc. Any non zero
-number is considered 1 and 0 is 0. snd_soc_of_xlate_tdm_slot_mask()
-does not do anything, if either mask is set non zero value.
diff --git a/Documentation/devicetree/bindings/sound/tdm-slot.yaml b/Documentation/devicetree/bindings/sound/tdm-slot.yaml
new file mode 100644
index 000000000000..b67844e1dfd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tdm-slot.yaml
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/tdm-slot.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Time Division Multiplexing (TDM) Slot Parameters
+
+maintainers:
+  - Liam Girdwood <lgirdwood@...il.com>
+
+select: false
+
+definitions:
+  dai-tdm-slot-num:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Number of slots in use
+
+  dai-tdm-slot-width:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Width, in bits, of each slot
+
+  dai-tdm-slot-tx-mask:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: Transmit direction slot mask. Optional. Drivers may specify an
+      .xlate_tdm_slot_mask() to generate a slot mask dynamically. If neither
+      this property nor a driver-specific function are specified, the default
+      snd_soc_xlate_tdm_slot_mask() function will be used to generate a mask.
+      The first element of the array is slot 0 (LSB). Any nonzero value will be
+      treated as 1.
+
+  dai-tdm-slot-rx-mask:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: Receive direction slot mask. Optional. Identical to TX mask.

-- 
2.52.0