xref: /freebsd/sys/contrib/device-tree/Bindings/gpio/sprd,gpio.yaml (revision 02e9120893770924227138ba49df1edb3896112a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright 2022 Unisoc Inc.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/gpio/sprd,gpio.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Unisoc GPIO controller
9
10maintainers:
11  - Orson Zhai <orsonzhai@gmail.com>
12  - Baolin Wang <baolin.wang7@gmail.com>
13  - Chunyan Zhang <zhang.lyra@gmail.com>
14
15description: |
16  The controller's registers are organized as sets of sixteen 16-bit
17  registers with each set controlling a bank of up to 16 pins. A single
18  interrupt is shared for all of the banks handled by the controller.
19
20properties:
21  compatible:
22    oneOf:
23      - const: sprd,sc9860-gpio
24      - items:
25          - enum:
26              - sprd,ums512-gpio
27          - const: sprd,sc9860-gpio
28
29  reg:
30    maxItems: 1
31
32  gpio-controller: true
33
34  "#gpio-cells":
35    const: 2
36
37  interrupt-controller: true
38
39  "#interrupt-cells":
40    const: 2
41
42  interrupts:
43    maxItems: 1
44    description: The interrupt shared by all GPIO lines for this controller.
45
46required:
47  - compatible
48  - reg
49  - gpio-controller
50  - "#gpio-cells"
51  - interrupt-controller
52  - "#interrupt-cells"
53  - interrupts
54
55additionalProperties: false
56
57examples:
58  - |
59    #include <dt-bindings/interrupt-controller/arm-gic.h>
60
61    soc {
62        #address-cells = <2>;
63        #size-cells = <2>;
64
65        ap_gpio: gpio@40280000 {
66            compatible = "sprd,sc9860-gpio";
67            reg = <0 0x40280000 0 0x1000>;
68            gpio-controller;
69            #gpio-cells = <2>;
70            interrupt-controller;
71            #interrupt-cells = <2>;
72            interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
73        };
74    };
75...
76