1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/gpio/brcm,brcmstb-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom STB "UPG GIO" GPIO controller
8
9 description: >
10 The controller's registers are organized as sets of eight 32-bit
11 registers with each set controlling a bank of up to 32 pins. A single
12 interrupt is shared for all of the banks handled by the controller.
13
14 maintainers:
15 - Doug Berger <opendmb@gmail.com>
16 - Florian Fainelli <f.fainelli@gmail.com>
17
18 properties:
19 compatible:
20 items:
21 - enum:
22 - brcm,bcm7445-gpio
23 - const: brcm,brcmstb-gpio
24
25 reg:
26 maxItems: 1
27 description: >
28 Define the base and range of the I/O address space containing
29 the brcmstb GPIO controller registers
30
31 "#gpio-cells":
32 const: 2
33 description: >
34 The first cell is the pin number (within the controller's
35 pin space), and the second is used for the following:
36 bit[0]: polarity (0 for active-high, 1 for active-low)
37
38 gpio-controller: true
39
40 brcm,gpio-bank-widths:
41 $ref: /schemas/types.yaml#/definitions/uint32-array
42 description: >
43 Number of GPIO lines for each bank. Number of elements must
44 correspond to number of banks suggested by the 'reg' property.
45
46 interrupts:
47 maxItems: 1
48 description: >
49 The interrupt shared by all GPIO lines for this controller.
50
51 "#interrupt-cells":
52 const: 2
53 description: |
54 The first cell is the GPIO number, the second should specify
55 flags. The following subset of flags is supported:
56 - bits[3:0] trigger type and level flags
57 1 = low-to-high edge triggered
58 2 = high-to-low edge triggered
59 4 = active high level-sensitive
60 8 = active low level-sensitive
61 Valid combinations are 1, 2, 3, 4, 8.
62
63 interrupt-controller: true
64
65 gpio-ranges: true
66
67 wakeup-source:
68 type: boolean
69 description: >
70 GPIOs for this controller can be used as a wakeup source
71
72 required:
73 - compatible
74 - reg
75 - gpio-controller
76 - "#gpio-cells"
77 - brcm,gpio-bank-widths
78
79 additionalProperties: false
80
81 examples:
82 - |
83 upg_gio: gpio@f040a700 {
84 #gpio-cells = <2>;
85 #interrupt-cells = <2>;
86 compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
87 gpio-controller;
88 interrupt-controller;
89 reg = <0xf040a700 0x80>;
90 interrupt-parent = <&irq0_intc>;
91 interrupts = <0x6>;
92 brcm,gpio-bank-widths = <32 32 32 24>;
93 gpio-ranges = <&pinctrl 0 0 120>;
94 };
95
96 upg_gio_aon: gpio@f04172c0 {
97 #gpio-cells = <2>;
98 #interrupt-cells = <2>;
99 compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
100 gpio-controller;
101 interrupt-controller;
102 reg = <0xf04172c0 0x40>;
103 interrupt-parent = <&irq0_aon_intc>;
104 interrupts = <0x6>;
105 wakeup-source;
106 brcm,gpio-bank-widths = <18 4>;
107 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.