[PATCH v3 2/2] dt-bindings: power: reset: add yaml bindings for LinkStation power off

["Daniel González Cabanelas" <dgcbueu@gmail.com>]

Add Linkstation poweroff bindings documentation. 

Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
---
Changes in v3:
  - "phy-handle,intn" property deleted. Now autodetection used.
  - Cosmetic changes
Changes in v2:
  - Changed the required properties and description to adjust to the new
    driver now enabling the WoL feature on the device.

 .../power/reset/linkstation-poweroff.yaml     | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/reset/linkstation-poweroff.yaml

diff --git a/Documentation/devicetree/bindings/power/reset/linkstation-poweroff.yaml b/Documentation/devicetree/bindings/power/reset/linkstation-poweroff.yaml
new file mode 100644
index 0000000000..8845333ca4
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/linkstation-poweroff.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/reset/linkstation-poweroff.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Buffalo Linkstation poweroff Binding
+
+maintainers:
+  - Daniel González Cabanelas <dgcbueu@gmail.com>
+
+description: |
+  Some Buffalo LinkStations (ARM MVEBU boards) use an output pin at the ethernet
+  PHY (LED2/INTn) to inform the board if the power off operation must be performed
+  at restart time. This pin is ORed with the power switch and allows the WOL
+  function to be also used.
+
+  When the power-off handler is called, the ethernet PHY INTn ouptut is set to
+  LOW state. If the restart command is executed then the PHY INTn output is
+  forced to HIGH state.
+
+properties:
+  compatible:
+    const: linkstation,power-off
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    poweroff {
+        compatible = "linkstation,power-off";
+    };
-- 
2.27.0