[PATCH v3 6/7] dt-bindings: gpio: add binding for the GPIO block for Apple Mac SMC

["Russell King (Oracle)" <rmk+kernel@xxxxxxxxxxxxxxx>]

Add the DT binding for the Apple Mac System Management Controller GPIOs.

Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
---
 .../bindings/gpio/apple,smc-gpio.yaml         | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml b/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml
new file mode 100644
index 000000000000..1a415b78760b
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-macsmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple Mac System Management Controller GPIO
+
+maintainers:
+  - Hector Martin <marcan@xxxxxxxxx>
+
+description:
+  Apple Mac System Management Controller GPIO block.
+
+properties:
+  compatible:
+    const: apple,smc-gpio
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+required:
+  - compatible
+  - gpio-controller
+  - '#gpio-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    gpio {
+        compatible = "apple,smc-gpio";
+        gpio-controller;
+        #gpio-cells = <2>;
+    };
-- 
2.30.2