[PATCH v1 1/2] dt-bindings: iio: dac: ad5504: add output-range and missing gpios

[Taha Ed-Dafili <0rayn.dev@gmail.com>]

The AD5504 output range (0-30V or 0-60V) is determined by the R_SEL pin.

Add `adi,output-range-volts` and `adi,output-range-gpios` to describe
this hardware state, using `allOf` to enforce mutual exclusivity.
Also add `vlogic-supply`, `clear-gpios`, and `ldac-gpios` to complete
the hardware description.

Suggested-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Taha Ed-Dafili <0rayn.dev@gmail.com>
---
 .../bindings/iio/dac/adi,ad5504.yaml          | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5504.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5504.yaml
index 9c2c038683b4..3e832e501b0e 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5504.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5504.yaml
@@ -27,12 +27,50 @@ properties:
     maxItems: 1
 
   vcc-supply: true
+  vlogic-supply: true
+
+  adi,output-range-volts:
+    description:
+      Hard-wired /R_SEL pin state. 30 V when pin is high and 60 V when
+      pin is low.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [30, 60]
+    default: 60
+
+  adi,output-range-gpios:
+    description:
+      GPIO connected to the R_SEL pin to select the output voltage range.
+    maxItems: 1
+
+  clear-gpios:
+    description: GPIO that controls the /CLR pin (active low).
+    maxItems: 1
+
+  ldac-gpios:
+    description: GPIO that controls the /LDAC pin (active low).
+    maxItems: 1
 
 additionalProperties: false
 
 required:
   - compatible
   - reg
+  - vcc-supply
+
+allOf:
+  - if:
+      required:
+        - adi,output-range-gpios
+    then:
+      properties:
+        adi,output-range-volts: false
+
+  - if:
+      required:
+        - adi,output-range-volts
+    then:
+      properties:
+        adi,output-range-gpios: false
 
 examples:
   - |
-- 
2.47.3