new file mode 100644
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-pca9570.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PCA9570 I2C GPO expander
+
+maintainers:
+ - Sungbo Eo <mans0n@gorani.run>
+
+properties:
+ compatible:
+ enum:
+ - nxp,pca9570
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ gpio@24 {
+ compatible = "nxp,pca9570";
+ reg = <0x24>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+...
This patch adds device tree bindings for the NXP PCA9570, a 4-bit I2C GPO expander. Signed-off-by: Sungbo Eo <mans0n@gorani.run> --- I don't feel I can really maintain this driver, but it seems all yaml docs have a maintainers field so I just added it... --- .../bindings/gpio/gpio-pca9570.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml