[net-next PATCH v3 09/14] dt-bindings: net: dsa: dsa-port: Document support for LEDs node

[Christian Marangi <ansuelsmth@gmail.com>]

Document support for LEDs node in dsa port.
Switch may support different LEDs that can be configured for different
operation like blinking on traffic event or port link.

Also add some Documentation to describe the difference of these nodes
compared to PHY LEDs, since dsa-port LEDs are controllable by the switch
regs and the possible intergated PHY doesn't have control on them.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 .../devicetree/bindings/net/dsa/dsa-port.yaml | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml b/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
index 480120469953..1bf4151e5155 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
@@ -59,6 +59,27 @@ properties:
       - rtl8_4t
       - seville
 
+  leds:
+    type: object
+    description:
+      Describes the LEDs associated by the Switch Port and controllable
+      in its MACs. These LEDs are not integrated in the PHY and PHY
+      doesn't have any control on them. Switch regs are used to control
+      these Switch Port LEDs.
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      '^led(@[a-f0-9]+)?$':
+        $ref: /schemas/leds/common.yaml#
+
+    additionalProperties: false
+
 # CPU and DSA ports must have phylink-compatible link descriptions
 if:
   oneOf:
-- 
2.39.2