[PATCH v2 1/2] ASoC: dt-bindings: es8316: Add regulator supplies

The ES8316 has separate AVDD, CPVDD, DVDD and PVDD supply inputs for
its analog, charge pump, digital core and digital I/O domains. Describe
all four inputs so boards can model the codec power topology.

The binding also covers ES8311 and ES8323, whose supply inputs differ,
so restrict these properties to the ES8316 compatible. Keep them
optional for compatibility with existing descriptions.

Signed-off-by: Hongyang Zhao <[email protected]>
---
 .../devicetree/bindings/sound/everest,es8316.yaml  | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/everest,es8316.yaml b/Documentation/devicetree/bindings/sound/everest,es8316.yaml
index fe5d938ca310..276c73bb4790 100644
--- a/Documentation/devicetree/bindings/sound/everest,es8316.yaml
+++ b/Documentation/devicetree/bindings/sound/everest,es8316.yaml
@@ -30,6 +30,17 @@ description: |
 
 allOf:
   - $ref: dai-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: everest,es8316
+    else:
+      properties:
+        avdd-supply: false
+        cpvdd-supply: false
+        dvdd-supply: false
+        pvdd-supply: false
 
 properties:
   compatible:
@@ -49,6 +60,18 @@ properties:
     items:
       - const: mclk
 
+  avdd-supply:
+    description: Regulator providing the analog supply, from 2.0 V to 3.6 V
+
+  cpvdd-supply:
+    description: Regulator providing the charge pump supply, from 1.6 V to 2.0 V
+
+  dvdd-supply:
+    description: Regulator providing the digital core supply, from 1.6 V to 3.6 V
+
+  pvdd-supply:
+    description: Regulator providing the digital I/O supply, from 1.6 V to 3.6 V
+
   interrupts:
     maxItems: 1
     description: Headphone detect interrupt
@@ -77,6 +100,10 @@ examples:
         reg = <0x11>;
         clocks = <&clks 10>;
         clock-names = "mclk";
+        avdd-supply = <&reg_3p3v>;
+        cpvdd-supply = <&reg_1p8v>;
+        dvdd-supply = <&reg_1p8v>;
+        pvdd-supply = <&reg_1p8v>;
         #sound-dai-cells = <0>;
       };
     };

-- 
2.43.0