tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: SiFive GPIO controller
8
9maintainers:
10 - Yash Shah <yash.shah@sifive.com>
11 - Paul Walmsley <paul.walmsley@sifive.com>
12
13properties:
14 compatible:
15 items:
16 - enum:
17 - sifive,fu540-c000-gpio
18 - sifive,fu740-c000-gpio
19 - canaan,k210-gpiohs
20 - const: sifive,gpio0
21
22 reg:
23 maxItems: 1
24
25 interrupts:
26 description:
27 Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
28 minItems: 1
29 maxItems: 32
30
31 interrupt-controller: true
32
33 "#interrupt-cells":
34 const: 2
35
36 clocks:
37 maxItems: 1
38
39 "#gpio-cells":
40 const: 2
41
42 ngpios:
43 description:
44 The number of GPIOs available on the controller implementation.
45 It is 16 for the SiFive SoCs and 32 for the Canaan K210.
46 minimum: 1
47 maximum: 32
48 default: 16
49
50 gpio-controller: true
51
52required:
53 - compatible
54 - reg
55 - interrupts
56 - interrupt-controller
57 - "#interrupt-cells"
58 - "#gpio-cells"
59 - gpio-controller
60
61if:
62 properties:
63 compatible:
64 contains:
65 enum:
66 - sifive,fu540-c000-gpio
67 - sifive,fu740-c000-gpio
68then:
69 required:
70 - clocks
71
72additionalProperties: false
73
74examples:
75 - |
76 #include <dt-bindings/clock/sifive-fu540-prci.h>
77 gpio@10060000 {
78 compatible = "sifive,fu540-c000-gpio", "sifive,gpio0";
79 interrupt-parent = <&plic>;
80 interrupts = <7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22>;
81 reg = <0x10060000 0x1000>;
82 clocks = <&tlclk PRCI_CLK_TLCLK>;
83 gpio-controller;
84 #gpio-cells = <2>;
85 interrupt-controller;
86 #interrupt-cells = <2>;
87 };
88
89...