From: Jiebing Chen <jiebing.chen@amlogic.com>

The audio power domain has been found on S4 device.
It must be enabled prior to audio operations.

Signed-off-by: Jiebing Chen <jiebing.chen@amlogic.com>
---
 .../bindings/clock/amlogic,axg-audio-clkc.yaml         | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
index fd7982dd4cea..1cd9a99e5ff3 100644
--- a/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
+++ b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
@@ -20,6 +20,7 @@ properties:
     enum:
       - amlogic,axg-audio-clkc
       - amlogic,g12a-audio-clkc
+      - amlogic,s4-audio-clkc
       - amlogic,sm1-audio-clkc
 
   '#clock-cells':
@@ -99,7 +100,8 @@ properties:
 
   resets:
     description: internal reset line
-
+  power-domains:
+    maxItems: 1
 required:
   - compatible
   - '#clock-cells'
@@ -115,6 +117,7 @@ allOf:
           contains:
             enum:
               - amlogic,g12a-audio-clkc
+              - amlogic,s4-audio-clkc
               - amlogic,sm1-audio-clkc
     then:
       required:
@@ -122,7 +125,18 @@ allOf:
     else:
       properties:
         '#reset-cells': false
-
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,s4-audio-clkc
+    then:
+      required:
+        - power-domains
+    else:
+      properties:
+        power-domains: false
 additionalProperties: false
 
 examples:

-- 
2.52.0

On Mon, Jan 26, 2026 at 06:01:42AM +0000, Jiebing Chen wrote:
> The audio power domain has been found on S4 device.
> It must be enabled prior to audio operations.
> 
> Signed-off-by: Jiebing Chen <jiebing.chen@amlogic.com>
> ---
>  .../bindings/clock/amlogic,axg-audio-clkc.yaml         | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
> index fd7982dd4cea..1cd9a99e5ff3 100644
> --- a/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
> +++ b/Documentation/devicetree/bindings/clock/amlogic,axg-audio-clkc.yaml
> @@ -20,6 +20,7 @@ properties:
>      enum:
>        - amlogic,axg-audio-clkc
>        - amlogic,g12a-audio-clkc
> +      - amlogic,s4-audio-clkc
>        - amlogic,sm1-audio-clkc
>  
>    '#clock-cells':
> @@ -99,7 +100,8 @@ properties:
>  
>    resets:
>      description: internal reset line
> -
> +  power-domains:
> +    maxItems: 1

blank line

Looks fine otherwise except for the DTB warning, so something here 
doesn't match.