xref: /freebsd/sys/contrib/device-tree/Bindings/gpio/nvidia,tegra20-gpio.yaml (revision 2b8331622f0b212cf3bb4fc4914a501e5321d506) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)
8
9maintainers:
10  - Thierry Reding <thierry.reding@gmail.com>
11  - Jon Hunter <jonathanh@nvidia.com>
12
13properties:
14  compatible:
15    oneOf:
16      - enum:
17          - nvidia,tegra20-gpio
18          - nvidia,tegra30-gpio
19
20      - items:
21          - enum:
22              - nvidia,tegra114-gpio
23              - nvidia,tegra124-gpio
24              - nvidia,tegra210-gpio
25          - const: nvidia,tegra30-gpio
26
27  reg:
28    maxItems: 1
29
30  interrupts:
31    description: The interrupt outputs from the controller. For Tegra20,
32      there should be 7 interrupts specified, and for Tegra30, there should
33      be 8 interrupts specified.
34
35  "#gpio-cells":
36    description: The first cell is the pin number and the second cell is used
37      to specify the GPIO polarity (0 = active high, 1 = active low).
38    const: 2
39
40  gpio-controller: true
41
42  gpio-ranges:
43    maxItems: 1
44
45  "#interrupt-cells":
46    description: |
47      Should be 2. The first cell is the GPIO number. The second cell is
48      used to specify flags:
49
50        bits[3:0] trigger type and level flags:
51          1 = low-to-high edge triggered.
52          2 = high-to-low edge triggered.
53          4 = active high level-sensitive.
54          8 = active low level-sensitive.
55
56      Valid combinations are 1, 2, 3, 4, 8.
57    const: 2
58
59  interrupt-controller: true
60
61allOf:
62  - if:
63      properties:
64        compatible:
65          contains:
66            const: nvidia,tegra30-gpio
67    then:
68      properties:
69        interrupts:
70          minItems: 8
71          maxItems: 8
72    else:
73      properties:
74        interrupts:
75          minItems: 7
76          maxItems: 7
77
78required:
79  - compatible
80  - reg
81  - interrupts
82  - "#gpio-cells"
83  - gpio-controller
84  - "#interrupt-cells"
85  - interrupt-controller
86
87additionalProperties:
88  type: object
89  required:
90    - gpio-hog
91
92examples:
93  - |
94    #include <dt-bindings/interrupt-controller/arm-gic.h>
95
96    gpio: gpio@6000d000 {
97        compatible = "nvidia,tegra20-gpio";
98        reg = <0x6000d000 0x1000>;
99        interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
100                     <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
101                     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
102                     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
103                     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
104                     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
105                     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
106        #gpio-cells = <2>;
107        gpio-controller;
108        #interrupt-cells = <2>;
109        interrupt-controller;
110    };
111