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-rw-r--r--Documentation/devicetree/bindings/gpio/sifive,gpio.yaml93
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diff --git a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive GPIO controller
+
+maintainers:
+ - Paul Walmsley <paul.walmsley@sifive.com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - sifive,fu540-c000-gpio
+ - sifive,fu740-c000-gpio
+ - canaan,k210-gpiohs
+ - const: sifive,gpio0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description:
+ Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
+ minItems: 1
+ maxItems: 32
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ clocks:
+ maxItems: 1
+
+ "#gpio-cells":
+ const: 2
+
+ ngpios:
+ description:
+ The number of GPIOs available on the controller implementation.
+ It is 16 for the SiFive SoCs and 32 for the Canaan K210.
+ minimum: 1
+ maximum: 32
+ default: 16
+
+ gpio-line-names:
+ minItems: 1
+ maxItems: 32
+
+ gpio-controller: true
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-controller
+ - "#interrupt-cells"
+ - "#gpio-cells"
+ - gpio-controller
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - sifive,fu540-c000-gpio
+ - sifive,fu740-c000-gpio
+then:
+ required:
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/sifive-fu540-prci.h>
+ gpio@10060000 {
+ compatible = "sifive,fu540-c000-gpio", "sifive,gpio0";
+ interrupt-parent = <&plic>;
+ interrupts = <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>,
+ <17>, <18>, <19>, <20>, <21>, <22>;
+ reg = <0x10060000 0x1000>;
+ clocks = <&tlclk FU540_PRCI_CLK_TLCLK>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+...