Currently this binding only lists i2s and dsp_b formats that are used
by existing sound cards. However, DT bindings should describe the full
hardware capabilities rather than only the formats of current usage.

The SAI audio controller of i.MX audio sound card supports multiple DAI
formats, including:
  - i2s
  - left_j
  - right_j
  - dsp_a
  - dsp_b
  - pdm
  - msb
  - lsb

Complete the full list of formats supported by i.MX audio sound card to
ensure the binding correctly describes hardware.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
Changes in v4:
- Completed the full list of DAI formats (i2s, left_j, right_j, dsp_a,
dsp_b, pdm, msb, lsb) supported by i.MX sound card.
- Rewrote commit message to focus on describing hardware capability
rather than current usage.

Changes in v3:
- Rewrote commit message completely to describe hardware requirements.
Explicitly documented why only dsp_a is added and why other formats
are not included.
- Rebased on latest code base. No functional changes.

Changes in v2:
- Updated commit message to explain current support for i2s and dsp_b
formats and new support for dsp_a. No code changes.

 Documentation/devicetree/bindings/sound/imx-audio-card.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
index 5424d4f16f52..950e3eab2942 100644
--- a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
+++ b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
@@ -37,7 +37,13 @@ patternProperties:
         items:
           enum:
             - i2s
+            - left_j
+            - right_j
+            - dsp_a
             - dsp_b
+            - pdm
+            - msb
+            - lsb

       dai-tdm-slot-num: true

--
2.50.1

On Tue, Mar 31, 2026 at 10:24:50AM +0900, Chancel Liu wrote:
> Currently this binding only lists i2s and dsp_b formats that are used
> by existing sound cards. However, DT bindings should describe the full
> hardware capabilities rather than only the formats of current usage.
> 
> The SAI audio controller of i.MX audio sound card supports multiple DAI
> formats, including:
>   - i2s
>   - left_j
>   - right_j
>   - dsp_a
>   - dsp_b
>   - pdm
>   - msb
>   - lsb
> 
> Complete the full list of formats supported by i.MX audio sound card to
> ensure the binding correctly describes hardware.
> 
> Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
> ---

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof