[PATCH 1/2] dt-bindings: gpio: max7317: add gpio driver bindings

[Edmund Berenson <edmund.berenson@xxxxxxxxx>]

Add driver bindings for the maxim max7317 spi
gpio expander.

Co-developed-by: Lukasz Zemla <Lukasz.Zemla@xxxxxxxxxxxx>
Signed-off-by: Lukasz Zemla <Lukasz.Zemla@xxxxxxxxxxxx>
Signed-off-by: Edmund Berenson <edmund.berenson@xxxxxxxxx>
---
 .../bindings/gpio/gpio-max7317.yaml           | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-max7317.yaml

diff --git a/Documentation/devicetree/bindings/gpio/gpio-max7317.yaml b/Documentation/devicetree/bindings/gpio/gpio-max7317.yaml
new file mode 100644
index 000000000000..88f1fe02a627
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-max7317.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-max7317.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX7317 SPI-Interfaced I/O Expander
+
+description: |
+  Bindings for 10-Port Maxim MAX7317 SPI GPIO expanders.
+
+properties:
+  compatible:
+    const: maxim,max7317
+
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-line-names:
+    minItems: 1
+    maxItems: 10
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - "#gpio-cells"
+
+additionalProperties: false
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+examples:
+  - |
+    spi {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            gpio5: gpio5@0 {
+                    compatible = "maxim,max7317";
+                    reg = <0>;
+                    gpio-controller;
+                    #gpio-cells = <2>;
+                    spi-max-frequency = <100000>;
+            };
+    };
-- 
2.37.4