0001 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: SiFive GPIO controller
0008
0009 maintainers:
0010 - Paul Walmsley <paul.walmsley@sifive.com>
0011
0012 properties:
0013 compatible:
0014 items:
0015 - enum:
0016 - sifive,fu540-c000-gpio
0017 - sifive,fu740-c000-gpio
0018 - canaan,k210-gpiohs
0019 - const: sifive,gpio0
0020
0021 reg:
0022 maxItems: 1
0023
0024 interrupts:
0025 description:
0026 Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
0027 minItems: 1
0028 maxItems: 32
0029
0030 interrupt-controller: true
0031
0032 "#interrupt-cells":
0033 const: 2
0034
0035 clocks:
0036 maxItems: 1
0037
0038 "#gpio-cells":
0039 const: 2
0040
0041 ngpios:
0042 description:
0043 The number of GPIOs available on the controller implementation.
0044 It is 16 for the SiFive SoCs and 32 for the Canaan K210.
0045 minimum: 1
0046 maximum: 32
0047 default: 16
0048
0049 gpio-line-names:
0050 minItems: 1
0051 maxItems: 32
0052
0053 gpio-controller: true
0054
0055 required:
0056 - compatible
0057 - reg
0058 - interrupts
0059 - interrupt-controller
0060 - "#interrupt-cells"
0061 - "#gpio-cells"
0062 - gpio-controller
0063
0064 if:
0065 properties:
0066 compatible:
0067 contains:
0068 enum:
0069 - sifive,fu540-c000-gpio
0070 - sifive,fu740-c000-gpio
0071 then:
0072 required:
0073 - clocks
0074
0075 additionalProperties: false
0076
0077 examples:
0078 - |
0079 #include <dt-bindings/clock/sifive-fu540-prci.h>
0080 gpio@10060000 {
0081 compatible = "sifive,fu540-c000-gpio", "sifive,gpio0";
0082 interrupt-parent = <&plic>;
0083 interrupts = <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>,
0084 <17>, <18>, <19>, <20>, <21>, <22>;
0085 reg = <0x10060000 0x1000>;
0086 clocks = <&tlclk FU540_PRCI_CLK_TLCLK>;
0087 gpio-controller;
0088 #gpio-cells = <2>;
0089 interrupt-controller;
0090 #interrupt-cells = <2>;
0091 };
0092
0093 ...
