Add devicetree binding document for Loongson-1 GPIO.
Signed-off-by: Keguang Zhang <keguang.zhang@xxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
V2 -> V3: Add Reviewed-by tag from Krzysztof Kozlowski
V1 -> V2: Use the same consistent quotes
Delete superfluous examples
---
.../bindings/gpio/loongson,ls1x-gpio.yaml | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml
diff --git a/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml b/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml
new file mode 100644
index 000000000000..1a472c05697c
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/loongson,ls1x-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson-1 GPIO controller
+
+maintainers:
+ - Keguang Zhang <keguang.zhang@xxxxxxxxx>
+
+properties:
+ compatible:
+ const: loongson,ls1x-gpio
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+
+ ngpios:
+ minimum: 1
+ maximum: 32
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+ - ngpios
+
+additionalProperties: false
+
+examples:
+ - |
+ gpio0: gpio@1fd010c0 {
+ compatible = "loongson,ls1x-gpio";
+ reg = <0x1fd010c0 0x4>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ ngpios = <32>;
+ };
+
+...
--
2.34.1
