[PATCH v4 1/2] dt-bindings: pwm: Document Airoha EN7581 PWM

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From: Christian Marangi <ansuelsmth@xxxxxxxxx>

Document required property for the Airoha EN7581 PWM. The device
requires 3 different address for the sgpio, flash and cycle config.

Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
 .../devicetree/bindings/pwm/airoha,en7581-pwm.yaml | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/airoha,en7581-pwm.yaml b/Documentation/devicetree/bindings/pwm/airoha,en7581-pwm.yaml
new file mode 100644
index 000000000000..52470668f90e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/airoha,en7581-pwm.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/airoha,en7581-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha EN7581 PWM
+
+maintainers:
+  - Christian Marangi <ansuelsmth@xxxxxxxxx>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: airoha,en7581-pwm
+
+  reg:
+    items:
+      - description: sgpio config address
+      - description: flash config address
+      - description: cycle config address
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pwm@1fbf0224 {
+        compatible = "airoha,en7581-pwm";
+        reg = <0x1fbf0224 0x10>,
+              <0x1fbf0238 0x28>,
+              <0x1fbf0298 0x8>;
+        #pwm-cells = <3>;
+    };

-- 
2.46.0





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