1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/mediatek,mt8192-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek MT8192 Pin Controller
8
9maintainers:
10  - Sean Wang <sean.wang@mediatek.com>
11
12description:
13  The MediaTek's MT8192 Pin controller is used to control SoC pins.
14
15properties:
16  compatible:
17    const: mediatek,mt8192-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 mentioned gpio
25      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  gpio-line-names: true
33
34  reg:
35    description:
36      Physical address base for GPIO base registers. There are 11 GPIO physical
37      address base in mt8192.
38    maxItems: 11
39
40  reg-names:
41    description:
42      GPIO base register names.
43    maxItems: 11
44
45  interrupt-controller: true
46
47  '#interrupt-cells':
48    const: 2
49
50  interrupts:
51    description: The interrupt outputs to sysirq.
52    maxItems: 1
53
54# PIN CONFIGURATION NODES
55patternProperties:
56  '-pins$':
57    type: object
58    additionalProperties: false
59    patternProperties:
60      '^pins':
61        type: object
62        description:
63          A pinctrl node should contain at least one subnodes representing the
64          pinctrl groups available on the machine. Each subnode will list the
65          pins it needs, and how they should be configured, with regard to muxer
66          configuration, pullups, drive strength, input enable/disable and input
67          schmitt.
68        $ref: pinmux-node.yaml
69
70        properties:
71          pinmux:
72            description:
73              Integer array, represents gpio pin number and mux setting.
74              Supported pin number and mux varies for different SoCs, and are
75              defined as macros in dt-bindings/pinctrl/<soc>-pinfunc.h directly.
76
77          drive-strength:
78            description:
79              It can support some arguments, such as MTK_DRIVE_4mA,
80              MTK_DRIVE_6mA, etc. See dt-bindings/pinctrl/mt65xx.h. It can only
81              support 2/4/6/8/10/12/14/16mA in mt8192.
82            enum: [2, 4, 6, 8, 10, 12, 14, 16]
83
84          drive-strength-microamp:
85            enum: [125, 250, 500, 1000]
86
87          bias-pull-down:
88            oneOf:
89              - type: boolean
90                description: normal pull down.
91              - enum: [100, 101, 102, 103]
92                description: PUPD/R1/R0 pull down type. See MTK_PUPD_SET_R1R0_
93                  defines in dt-bindings/pinctrl/mt65xx.h.
94              - enum: [200, 201, 202, 203]
95                description: RSEL pull down type. See MTK_PULL_SET_RSEL_ defines
96                  in dt-bindings/pinctrl/mt65xx.h.
97
98          bias-pull-up:
99            oneOf:
100              - type: boolean
101                description: normal pull up.
102              - enum: [100, 101, 102, 103]
103                description: PUPD/R1/R0 pull up type. See MTK_PUPD_SET_R1R0_
104                  defines in dt-bindings/pinctrl/mt65xx.h.
105              - enum: [200, 201, 202, 203]
106                description: RSEL pull up type. See MTK_PULL_SET_RSEL_ defines
107                  in dt-bindings/pinctrl/mt65xx.h.
108
109          bias-disable: true
110
111          output-high: true
112
113          output-low: true
114
115          input-enable: true
116
117          input-disable: true
118
119          input-schmitt-enable: true
120
121          input-schmitt-disable: true
122
123        required:
124          - pinmux
125
126        additionalProperties: false
127
128allOf:
129  - $ref: pinctrl.yaml#
130
131required:
132  - compatible
133  - reg
134  - interrupts
135  - interrupt-controller
136  - '#interrupt-cells'
137  - gpio-controller
138  - '#gpio-cells'
139  - gpio-ranges
140
141additionalProperties: false
142
143examples:
144  - |
145            #include <dt-bindings/pinctrl/mt8192-pinfunc.h>
146            #include <dt-bindings/interrupt-controller/arm-gic.h>
147            pio: pinctrl@10005000 {
148                    compatible = "mediatek,mt8192-pinctrl";
149                    reg = <0x10005000 0x1000>,
150                          <0x11c20000 0x1000>,
151                          <0x11d10000 0x1000>,
152                          <0x11d30000 0x1000>,
153                          <0x11d40000 0x1000>,
154                          <0x11e20000 0x1000>,
155                          <0x11e70000 0x1000>,
156                          <0x11ea0000 0x1000>,
157                          <0x11f20000 0x1000>,
158                          <0x11f30000 0x1000>,
159                          <0x1000b000 0x1000>;
160                    reg-names = "iocfg0", "iocfg_rm", "iocfg_bm",
161                          "iocfg_bl", "iocfg_br", "iocfg_lm",
162                          "iocfg_lb", "iocfg_rt", "iocfg_lt",
163                          "iocfg_tl", "eint";
164                    gpio-controller;
165                    #gpio-cells = <2>;
166                    gpio-ranges = <&pio 0 0 220>;
167                    interrupt-controller;
168                    interrupts = <GIC_SPI 212 IRQ_TYPE_LEVEL_HIGH 0>;
169                    #interrupt-cells = <2>;
170
171                    spi1-default-pins {
172                            pins-cs-mosi-clk {
173                                    pinmux = <PINMUX_GPIO157__FUNC_SPI1_A_CSB>,
174                                             <PINMUX_GPIO159__FUNC_SPI1_A_MO>,
175                                             <PINMUX_GPIO156__FUNC_SPI1_A_CLK>;
176                                    bias-disable;
177                            };
178
179                            pins-miso {
180                                    pinmux = <PINMUX_GPIO158__FUNC_SPI1_A_MI>;
181                                    bias-pull-down;
182                            };
183                    };
184            };
185