Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / pinctrl / pinctrl-mt8195.yaml
1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/pinctrl-mt8195.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Mediatek MT8195 Pin Controller
8
9 maintainers:
10   - Sean Wang <sean.wang@mediatek.com>
11
12 description: |
13   The Mediatek's Pin controller is used to control SoC pins.
14
15 properties:
16   compatible:
17     const: mediatek,mt8195-pinctrl
18
19   gpio-controller: true
20
21   '#gpio-cells':
22     description: |
23       Number of cells in GPIO specifier. Since the generic GPIO binding is used,
24       the amount of cells must be specified as 2. See the below
25       mentioned gpio binding representation for description of particular cells.
26     const: 2
27
28   gpio-ranges:
29     description: gpio valid number range.
30     maxItems: 1
31
32   reg:
33     description: |
34       Physical address base for gpio base registers. There are 8 GPIO
35       physical address base in mt8195.
36     maxItems: 8
37
38   reg-names:
39     description: |
40       Gpio base register names.
41     maxItems: 8
42
43   interrupt-controller: true
44
45   '#interrupt-cells':
46     const: 2
47
48   interrupts:
49     description: The interrupt outputs to sysirq.
50     maxItems: 1
51
52 #PIN CONFIGURATION NODES
53 patternProperties:
54   '-pins$':
55     type: object
56     description: |
57       A pinctrl node should contain at least one subnodes representing the
58       pinctrl groups available on the machine. Each subnode will list the
59       pins it needs, and how they should be configured, with regard to muxer
60       configuration, pullups, drive strength, input enable/disable and
61       input schmitt.
62       An example of using macro:
63       pincontroller {
64         /* GPIO0 set as multifunction GPIO0 */
65         gpio_pin {
66           pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
67         };
68         /* GPIO8 set as multifunction SDA0 */
69         i2c0_pin {
70           pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
71         };
72       };
73     $ref: "pinmux-node.yaml"
74
75     properties:
76       pinmux:
77         description: |
78           Integer array, represents gpio pin number and mux setting.
79           Supported pin number and mux varies for different SoCs, and are defined
80           as macros in dt-bindings/pinctrl/<soc>-pinfunc.h directly.
81
82       drive-strength:
83         description: |
84           It can support some arguments which is from 0 to 7. It can only support
85           2/4/6/8/10/12/14/16mA in mt8195.
86         enum: [0, 1, 2, 3, 4, 5, 6, 7]
87
88       bias-pull-down: true
89
90       bias-pull-up: true
91
92       bias-disable: true
93
94       output-high: true
95
96       output-low: true
97
98       input-enable: true
99
100       input-disable: true
101
102       input-schmitt-enable: true
103
104       input-schmitt-disable: true
105
106     required:
107       - pinmux
108
109     additionalProperties: false
110
111 required:
112   - compatible
113   - reg
114   - interrupts
115   - interrupt-controller
116   - '#interrupt-cells'
117   - gpio-controller
118   - '#gpio-cells'
119   - gpio-ranges
120
121 additionalProperties: false
122
123 examples:
124   - |
125             #include <dt-bindings/pinctrl/mt8195-pinfunc.h>
126             #include <dt-bindings/interrupt-controller/arm-gic.h>
127             pio: pinctrl@10005000 {
128                     compatible = "mediatek,mt8195-pinctrl";
129                     reg = <0x10005000 0x1000>,
130                           <0x11d10000 0x1000>,
131                           <0x11d30000 0x1000>,
132                           <0x11d40000 0x1000>,
133                           <0x11e20000 0x1000>,
134                           <0x11eb0000 0x1000>,
135                           <0x11f40000 0x1000>,
136                           <0x1000b000 0x1000>;
137                     reg-names = "iocfg0", "iocfg_bm", "iocfg_bl",
138                           "iocfg_br", "iocfg_lm", "iocfg_rb",
139                           "iocfg_tl", "eint";
140                     gpio-controller;
141                     #gpio-cells = <2>;
142                     gpio-ranges = <&pio 0 0 144>;
143                     interrupt-controller;
144                     interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>;
145                     #interrupt-cells = <2>;
146
147                     pio-pins {
148                       pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
149                       output-low;
150                     };
151             };