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47db3216 AP |
1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
2 | %YAML 1.2 | |
3 | --- | |
4 | $id: http://devicetree.org/schemas/arm/vexpress-sysreg.yaml# | |
5 | $schema: http://devicetree.org/meta-schemas/core.yaml# | |
6 | ||
7 | title: ARM Versatile Express system registers bindings | |
8 | ||
9 | maintainers: | |
10 | - Andre Przywara <andre.przywara@arm.com> | |
11 | ||
12 | description: | |
13 | This is a system control registers block, providing multiple low level | |
14 | platform functions like board detection and identification, software | |
15 | interrupt generation, MMC and NOR Flash control, etc. | |
16 | ||
17 | properties: | |
18 | compatible: | |
19 | const: arm,vexpress-sysreg | |
20 | ||
21 | reg: | |
22 | maxItems: 1 | |
23 | ||
24 | "#address-cells": | |
25 | const: 1 | |
26 | ||
27 | "#size-cells": | |
28 | const: 1 | |
29 | ||
30 | ranges: true | |
31 | ||
67fcaf28 RH |
32 | gpio-controller: |
33 | deprecated: true | |
34 | ||
35 | "#gpio-cells": | |
36 | deprecated: true | |
37 | const: 2 | |
38 | ||
47db3216 AP |
39 | additionalProperties: false |
40 | ||
41 | patternProperties: | |
42 | '^gpio@[0-9a-f]+$': | |
43 | type: object | |
44 | additionalProperties: false | |
45 | description: | |
46 | GPIO children | |
47 | ||
48 | properties: | |
49 | compatible: | |
50 | enum: | |
51 | - arm,vexpress-sysreg,sys_led | |
52 | - arm,vexpress-sysreg,sys_mci | |
53 | - arm,vexpress-sysreg,sys_flash | |
54 | ||
55 | gpio-controller: true | |
56 | ||
57 | "#gpio-cells": | |
58 | const: 2 | |
59 | description: | | |
60 | The first cell is the function number: | |
61 | for sys_led : 0..7 = LED 0..7 | |
62 | for sys_mci : 0 = MMC CARDIN, 1 = MMC WPROT | |
63 | for sys_flash : 0 = NOR FLASH WPn | |
64 | The second cell can take standard GPIO flags. | |
65 | ||
66 | reg: | |
67 | maxItems: 1 | |
68 | ||
69 | required: | |
70 | - compatible | |
71 | - reg | |
72 | - gpio-controller | |
73 | - "#gpio-cells" | |
74 | ||
75 | required: | |
76 | - compatible | |
cfda05c1 | 77 | - reg |
47db3216 AP |
78 | |
79 | examples: | |
80 | - | | |
81 | sysreg@0 { | |
82 | compatible = "arm,vexpress-sysreg"; | |
83 | reg = <0x00000 0x1000>; | |
84 | #address-cells = <1>; | |
85 | #size-cells = <1>; | |
86 | ranges = <0 0 0x1000>; | |
87 | ||
88 | v2m_led_gpios: gpio@8 { | |
89 | compatible = "arm,vexpress-sysreg,sys_led"; | |
90 | reg = <0x008 4>; | |
91 | gpio-controller; | |
92 | #gpio-cells = <2>; | |
93 | }; | |
94 | }; | |
95 | ||
96 | ... |