[PATCH 04/12] dt-bindings: iio: dac: ad5686: rework on power supplies

[Rodrigo Alencar via B4 Relay]

From: Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>

Add supplies for VDD, VLOGIC and VREF input voltage pins. The vcc-supply
property is deprecated, once it does not really exist as none of the
devices describe any power input with that name. VCC is also misleading as
it sounds like the input power supply, but it is being used as an external
voltage reference, which should be called VREF. Certain devices require
vref-supply to be available once an internal reference voltage is absent.
For correct operation vdd and vlogic supplies are required.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>
---
 .../devicetree/bindings/iio/dac/adi,ad5686.yaml    | 31 ++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
index 4680d4753dd4..2abdbf325392 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
@@ -32,8 +32,19 @@ properties:
   reg:
     maxItems: 1
 
+  vdd-supply:
+    description: Input power supply.
+
+  vlogic-supply:
+    description: Digital power supply.
+
+  vref-supply:
+    description:
+      Reference voltage supply. If not supplied the internal reference is used.
+
   vcc-supply:
-    description: If not supplied the internal reference is used.
+    deprecated: true
+    description: Use vref-supply instead.
 
   reset-gpios:
     description: Active-low RESET pin to reset the device.
@@ -53,9 +64,23 @@ properties:
 required:
   - compatible
   - reg
+  - vdd-supply
+  - vlogic-supply
 
 allOf:
   - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            anyOf:
+              - const: adi,ad5676
+              - const: adi,ad5683
+              - const: adi,ad5684
+              - const: adi,ad5686
+    then:
+      required:
+        - vref-supply
   - if:
       properties:
         compatible:
@@ -81,7 +106,9 @@ examples:
         dac@0 {
             reg = <0>;
             compatible = "adi,ad5310r";
-            vcc-supply = <&dac_vref0>;
+            vdd-supply = <&dac_vdd>;
+            vlogic-supply = <&dac_vlogic>;
+            vref-supply = <&dac_vref>;
             reset-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
             ldac-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
         };

-- 
2.43.0