Add compatible string "mediatek,mt8188-nau8825" to support new board
with nau8825 codec.

Introduce two properties "dai-format" and "mediatek,clk-provider" under
dai-link subnode to configure dai-link parameters via dts.

"codec" property is removed from required property of dai-link subnode.
For co-clock case, it's possible two dai-links should be configured to
the same dai format, but only one cpu dai is bound with codec.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
---
 .../sound/mediatek,mt8188-mt6359.yaml         | 26 ++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml
index 3d2c01b693be..05e532b5d50a 100644
--- a/Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml
+++ b/Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml
@@ -11,7 +11,9 @@ maintainers:
 
 properties:
   compatible:
-    const: mediatek,mt8188-mt6359-evb
+    enum:
+      - mediatek,mt8188-mt6359-evb
+      - mediatek,mt8188-nau8825
 
   model:
     $ref: /schemas/types.yaml#/definitions/string
@@ -61,11 +63,28 @@ patternProperties:
         required:
           - sound-dai
 
+      dai-format:
+        description: audio format.
+        items:
+          enum:
+            - i2s
+            - right_j
+            - left_j
+            - dsp_a
+            - dsp_b
+
+      mediatek,clk-provider:
+        $ref: /schemas/types.yaml#/definitions/string
+        description: Indicates dai-link clock master.
+        items:
+          enum:
+            - cpu
+            - codec
+
     additionalProperties: false
 
     required:
       - link-name
-      - codec
 
 additionalProperties: false
 
@@ -86,7 +105,8 @@ examples:
             "AIN1", "Headset Mic";
         dai-link-0 {
             link-name = "ETDM3_OUT_BE";
-
+            dai-format = "i2s";
+            mediatek,clk-provider = "cpu";
             codec {
                 sound-dai = <&hdmi0>;
             };
-- 
2.18.0

On Fri, May 26, 2023 at 05:31:50PM +0800, Trevor Wu wrote:

> +      dai-format:
> +        description: audio format.
> +        items:
> +          enum:
> +            - i2s
> +            - right_j
> +            - left_j
> +            - dsp_a
> +            - dsp_b

Why is this a DT property - why not just pick one in the driver given
that it's for a machine with a specific CODEC?

On Thu, 2023-06-01 at 12:29 +0100, Mark Brown wrote:
> On Fri, May 26, 2023 at 05:31:50PM +0800, Trevor Wu wrote:
> 
> > +      dai-format:
> > +        description: audio format.
> > +        items:
> > +          enum:
> > +            - i2s
> > +            - right_j
> > +            - left_j
> > +            - dsp_a
> > +            - dsp_b
> 
> Why is this a DT property - why not just pick one in the driver given
> that it's for a machine with a specific CODEC?

Hi Mark,

We aim to reuse the machine driver for various codec combinations. To
achieve this, I included the property that allows overwriting of the
default configuration in the machine driver.

Thanks,
Trevor