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From:   =?UTF-8?q?Martin=20Povi=C5=A1er?= <povik+lin@cutebit.org>
To:     Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>
Cc:     Andrew Davis <afd@ti.com>, Shi Fu <shifu0704@thundersoft.com>,
        Shenghao Ding <shenghao-ding@ti.com>, kevin-lu@ti.com,
        alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, asahi@lists.linux.dev,
        =?UTF-8?q?Martin=20Povi=C5=A1er?= <povik+lin@cutebit.org>
Subject: [PATCH] ASoC: dt-bindings: Adjust #sound-dai-cells on TI's single-DAI codecs
Date:   Tue,  9 May 2023 17:34:12 +0200
Message-Id: <20230509153412.62847-1-povik+lin@cutebit.org>
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Precedence: bulk

A bunch of TI's codecs have binding schemas which force #sound-dai-cells
to one despite those codecs only having a single DAI. Allow for bindings
with zero DAI cells and deprecate the former non-zero value.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
---
 Documentation/devicetree/bindings/sound/tas2562.yaml | 6 ++++--
 Documentation/devicetree/bindings/sound/tas2770.yaml | 6 ++++--
 Documentation/devicetree/bindings/sound/tas27xx.yaml | 6 ++++--
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/tas2562.yaml b/Documentation/devicetree/bindings/sound/tas2562.yaml
index a5bb561bfcfb..31a3024ea789 100644
--- a/Documentation/devicetree/bindings/sound/tas2562.yaml
+++ b/Documentation/devicetree/bindings/sound/tas2562.yaml
@@ -55,7 +55,9 @@ properties:
     description: TDM TX current sense time slot.
 
   '#sound-dai-cells':
-    const: 1
+    # The codec has a single DAI, the #sound-dai-cells=<1>; case is left in for backward
+    # compatibility but is deprecated.
+    enum: [0, 1]
 
 required:
   - compatible
@@ -72,7 +74,7 @@ examples:
      codec: codec@4c {
        compatible = "ti,tas2562";
        reg = <0x4c>;
-       #sound-dai-cells = <1>;
+       #sound-dai-cells = <0>;
        interrupt-parent = <&gpio1>;
        interrupts = <14>;
        shutdown-gpios = <&gpio1 15 0>;
diff --git a/Documentation/devicetree/bindings/sound/tas2770.yaml b/Documentation/devicetree/bindings/sound/tas2770.yaml
index 26088adb9dc2..8908bf1122e9 100644
--- a/Documentation/devicetree/bindings/sound/tas2770.yaml
+++ b/Documentation/devicetree/bindings/sound/tas2770.yaml
@@ -57,7 +57,9 @@ properties:
       - 1 # Falling edge
 
   '#sound-dai-cells':
-    const: 1
+    # The codec has a single DAI, the #sound-dai-cells=<1>; case is left in for backward
+    # compatibility but is deprecated.
+    enum: [0, 1]
 
 required:
   - compatible
@@ -74,7 +76,7 @@ examples:
      codec: codec@41 {
        compatible = "ti,tas2770";
        reg = <0x41>;
-       #sound-dai-cells = <1>;
+       #sound-dai-cells = <0>;
        interrupt-parent = <&gpio1>;
        interrupts = <14>;
        reset-gpio = <&gpio1 15 0>;
diff --git a/Documentation/devicetree/bindings/sound/tas27xx.yaml b/Documentation/devicetree/bindings/sound/tas27xx.yaml
index 8cba01316855..a876545ec87d 100644
--- a/Documentation/devicetree/bindings/sound/tas27xx.yaml
+++ b/Documentation/devicetree/bindings/sound/tas27xx.yaml
@@ -50,7 +50,9 @@ properties:
     description: TDM TX voltage sense time slot.
 
   '#sound-dai-cells':
-    const: 1
+    # The codec has a single DAI, the #sound-dai-cells=<1>; case is left in for backward
+    # compatibility but is deprecated.
+    enum: [0, 1]
 
 required:
   - compatible
@@ -67,7 +69,7 @@ examples:
      codec: codec@38 {
        compatible = "ti,tas2764";
        reg = <0x38>;
-       #sound-dai-cells = <1>;
+       #sound-dai-cells = <0>;
        interrupt-parent = <&gpio1>;
        interrupts = <14>;
        reset-gpios = <&gpio1 15 0>;
-- 
2.38.3