[PATCH v1 2/2] dt-bindings: gpio: add loongson series gpio

[Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>]

Add the Loongson series gpio binding with DT schema format using
json-schema.

Signed-off-by: Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
---
 .../bindings/gpio/loongson,ls-gpio.yaml       | 154 ++++++++++++++++++
 MAINTAINERS                                   |  11 ++
 2 files changed, 165 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml b/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml
new file mode 100644
index 000000000000..9d335262ddcc
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml
@@ -0,0 +1,154 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/loongson,ls-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson series GPIO controller.
+
+maintainers:
+  - Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
+
+properties:
+  compatible:
+    enum:
+      - loongson,ls2k-gpio
+      - loongson,ls7a-gpio
+
+  reg:
+    maxItems: 1
+
+  ngpios: true
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-controller: true
+
+  gpio-ranges: true
+
+  loongson,conf_offset:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This option indicate this GPIO configuration offset address.
+
+  loongson,out_offset:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This option indicate this GPIO output value offset address.
+
+  loongson,in_offset:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This option indicate this GPIO input value offset address.
+
+  loongson,gpio_base:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This option indicate the first GPIO number in this node.
+
+  loongson,support_irq:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      This option indicate this GPIO whether support interrupt.
+
+  interrupts:
+    minItems: 1
+    maxItems: 64
+
+required:
+  - compatible
+  - reg
+  - ngpios
+  - "#gpio-cells"
+  - gpio-controller
+  - gpio-ranges
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    gpio0: gpio@1fe00500 {
+      compatible = "loongson,ls2k-gpio";
+      reg = <0x1fe00500 0x38>;
+      ngpios = <64>;
+      #gpio-cells = <2>;
+      gpio-controller;
+      gpio-ranges = <&pctrl 0 0 15>,
+                    <&pctrl 16 16 15>,
+                    <&pctrl 32 32 10>,
+                    <&pctrl 44 44 20>;
+      loongson,conf_offset = <0>;
+      loongson,out_offset = <0x10>;
+      loongson,in_offset = <0x20>;
+      loongson,gpio_base = <0>;
+      loongson,support_irq;
+      interrupt-parent = <&liointc1>;
+      interrupts = <28 IRQ_TYPE_LEVEL_LOW>,
+                   <29 IRQ_TYPE_LEVEL_LOW>,
+                   <30 IRQ_TYPE_LEVEL_LOW>,
+                   <30 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <26 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <>,
+                   <>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>,
+                   <27 IRQ_TYPE_LEVEL_LOW>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 916b2d9cffc0..878b8320ac3b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12048,6 +12048,17 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml
 F:	drivers/soc/loongson/loongson2_guts.c
 
+LOONGSON SERIES GPIO DRIVER
+M:	Richard Liu, STMicroelectronics <richard.liu@xxxxxx>
+M:	Arnaud Patard <apatard@xxxxxxxxxxxx>
+M:	Hongbing Hu <huhb@xxxxxxxxxx>
+M:	Huacai Chen <chenhuacai@xxxxxxxxxx>
+M:	Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
+L:	linux-gpio@xxxxxxxxxxxxxxx
+S:	Maintained
+F:	Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml
+F:	drivers/gpio/gpio-loongson.c
+
 LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)
 M:	Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
 M:	Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
-- 
2.20.1