On Thu, Aug 10, 2023 at 05:54:26PM +0300, Aleksandr Shubin wrote:

+allOf:
+  - $ref: pwm.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun20i-r329-pwm
+
+    then:
+      required:
+        - allwinner,pwm-channels
+
+    else:
+      not:
+        required:
+          - allwinner,pwm-channels

Hmm, I realise I lead you astray a little. This can be reduced to
    else:
      properties:
        allwinner,pwm-channels: false

If you respin, please update to that. Otherwise,
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.