[PATCH v2 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC

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Document Renesas RZ/G2UL ADC bindings. RZ/G2UL ADC is almost identical
to RZ/G2L, but it has 2 analog input channels compared to 8 channels
on the RZ/G2L.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v1->v2:
 * Started using generic compatible for RZ/G2UL and added SoC specific validation
   for channels.
---
 .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 45 ++++++++++++++++---
 1 file changed, 38 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
index d66c24cae1e1..2da3538a3543 100644
--- a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043-adc   # RZ/G2UL
           - renesas,r9a07g044-adc   # RZ/G2L
           - renesas,r9a07g054-adc   # RZ/V2L
       - const: renesas,rzg2l-adc
@@ -74,18 +75,48 @@ patternProperties:
       Represents the external channels which are connected to the ADC.
 
     properties:
-      reg:
-        description: |
-          The channel number. It can have up to 8 channels numbered from 0 to 7.
-        items:
-          - minimum: 0
-            maximum: 7
-
+      reg: true
     required:
       - reg
 
     additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a07g043-adc
+    then:
+      patternProperties:
+        "^channel@[0-7]$":
+          type: object
+          properties:
+            reg:
+              description: |
+                The channel number. It can have up to 2 channels numbered from 0 to 1.
+              items:
+                - minimum: 0
+                  maximum: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r9a07g044-adc
+              - renesas,r9a07g054-adc
+    then:
+      patternProperties:
+        "^channel@[0-7]$":
+          type: object
+          properties:
+            reg:
+              description: |
+                The channel number. It can have up to 8 channels numbered from 0 to 7.
+              items:
+                - minimum: 0
+                  maximum: 7
+
 additionalProperties: false
 
 examples:
-- 
2.25.1




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