1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/med
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: MediaTek MT6795 Pin Controller
8
9 maintainers:
10 - AngeloGioacchino Del Regno <angelogioacchin
11 - Sean Wang <sean.wang@kernel.org>
12
13 description:
14 The MediaTek's MT6795 Pin controller is used
15
16 properties:
17 compatible:
18 const: mediatek,mt6795-pinctrl
19
20 gpio-controller: true
21
22 '#gpio-cells':
23 description:
24 Number of cells in GPIO specifier. Since
25 the amount of cells must be specified as
26 binding representation for description o
27 const: 2
28
29 gpio-ranges:
30 description: GPIO valid number range.
31 maxItems: 1
32
33 reg:
34 description:
35 Physical address base for GPIO base and
36 minItems: 2
37
38 reg-names:
39 items:
40 - const: base
41 - const: eint
42
43 interrupt-controller: true
44
45 '#interrupt-cells':
46 const: 2
47
48 interrupts:
49 description: Interrupt outputs to the syst
50 minItems: 1
51 items:
52 - description: EINT interrupt
53 - description: EINT event_b interrupt
54
55 # PIN CONFIGURATION NODES
56 patternProperties:
57 '-pins$':
58 type: object
59 additionalProperties: false
60 patternProperties:
61 '^pins':
62 type: object
63 additionalProperties: false
64 description: |
65 A pinctrl node should contain at lea
66 pinctrl groups available on the mach
67 pins it needs, and how they should b
68 configuration, pullups, drive streng
69 schmitt.
70 An example of using macro:
71 pincontroller {
72 /* GPIO0 set as multifunction GPIO
73 gpio-pins {
74 pins {
75 pinmux = <PINMUX_GPIO0__FUNC_G
76 }
77 };
78 /* GPIO45 set as multifunction SDA
79 i2c0-pins {
80 pins {
81 pinmux = <PINMUX_GPIO45__FUNC_
82 }
83 };
84 };
85 $ref: pinmux-node.yaml
86
87 properties:
88 pinmux:
89 description:
90 Integer array, represents gpio p
91 Supported pin number and mux var
92 defined as macros in dt-bindings
93
94 drive-strength:
95 enum: [2, 4, 6, 8, 10, 12, 14, 16]
96
97 bias-pull-down:
98 oneOf:
99 - type: boolean
100 - enum: [100, 101, 102, 103]
101 description: mt6795 pull down
102 description:
103 For normal pull down type, it is
104 values; When pull down type is P
105 will set different resistance va
106
107 bias-pull-up:
108 oneOf:
109 - type: boolean
110 - enum: [100, 101, 102, 103]
111 description: mt6795 pull up PU
112 description:
113 For normal pull up type, it is n
114 values; When pull up type is PUP
115 set different resistance values.
116
117 bias-disable: true
118
119 output-high: true
120
121 output-low: true
122
123 input-enable: true
124
125 input-disable: true
126
127 input-schmitt-enable: true
128
129 input-schmitt-disable: true
130
131 mediatek,pull-up-adv:
132 description: |
133 Pull up settings for 2 pull resi
134 configure those special pins. Va
135 below:
136 0: (R1, R0) = (0, 0) which means
137 1: (R1, R0) = (0, 1) which means
138 2: (R1, R0) = (1, 0) which means
139 3: (R1, R0) = (1, 1) which means
140 $ref: /schemas/types.yaml#/definit
141 enum: [0, 1, 2, 3]
142
143 mediatek,pull-down-adv:
144 description: |
145 Pull down settings for 2 pull re
146 configure those special pins. Va
147 below:
148 0: (R1, R0) = (0, 0) which means
149 1: (R1, R0) = (0, 1) which means
150 2: (R1, R0) = (1, 0) which means
151 3: (R1, R0) = (1, 1) which means
152 $ref: /schemas/types.yaml#/definit
153 enum: [0, 1, 2, 3]
154
155 required:
156 - pinmux
157
158 allOf:
159 - $ref: pinctrl.yaml#
160
161 required:
162 - compatible
163 - reg
164 - reg-names
165 - interrupts
166 - interrupt-controller
167 - '#interrupt-cells'
168 - gpio-controller
169 - '#gpio-cells'
170 - gpio-ranges
171
172 additionalProperties: false
173
174 examples:
175 - |
176 #include <dt-bindings/interrupt-controller
177 #include <dt-bindings/interrupt-controller
178 #include <dt-bindings/pinctrl/mt6795-pinfu
179
180 soc {
181 #address-cells = <2>;
182 #size-cells = <2>;
183
184 pio: pinctrl@10005000 {
185 compatible = "mediatek,mt6795-pinc
186 reg = <0 0x10005000 0 0x1000>, <0
187 reg-names = "base", "eint";
188 gpio-controller;
189 #gpio-cells = <2>;
190 gpio-ranges = <&pio 0 0 196>;
191 interrupt-controller;
192 interrupts = <GIC_SPI 153 IRQ_TYPE
193 #interrupt-cells = <2>;
194
195 i2c0-pins {
196 pins-sda-scl {
197 pinmux = <PINMUX_GPIO45__F
198 <PINMUX_GPIO46__F
199 };
200 };
201
202 mmc0-pins {
203 pins-cmd-dat {
204 pinmux = <PINMUX_GPIO154__
205 <PINMUX_GPIO155__
206 <PINMUX_GPIO156__
207 <PINMUX_GPIO157__
208 <PINMUX_GPIO158__
209 <PINMUX_GPIO159__
210 <PINMUX_GPIO160__
211 <PINMUX_GPIO161__
212 <PINMUX_GPIO162__
213 input-enable;
214 bias-pull-up = <MTK_PUPD_S
215 };
216
217 pins-clk {
218 pinmux = <PINMUX_GPIO163__
219 bias-pull-down = <MTK_PUPD
220 };
221
222 pins-rst {
223 pinmux = <PINMUX_GPIO165__
224 bias-pull-up = <MTK_PUPD_S
225 };
226 };
227 };
228 };
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