1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/amlogic,pinctrl-a4.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Amlogic pinmux controller
maintainers:
- Xianwei Zhao <xianwei.zhao@amlogic.com>
allOf:
- $ref: pinctrl.yaml#
properties:
compatible:
const: amlogic,pinctrl-a4
"#address-cells":
const: 2
"#size-cells":
const: 2
ranges: true
patternProperties:
"^gpio@[0-9a-f]+$":
type: object
additionalProperties: false
properties:
reg:
minItems: 1
items:
- description: pin config register
- description: pin mux setting register (some special pin fixed function)
- description: pin drive strength register (optional)
reg-names:
minItems: 1
items:
- const: gpio
- const: mux
- const: ds
gpio-controller: true
"#gpio-cells":
const: 2
gpio-ranges:
maxItems: 1
required:
- reg
- reg-names
- gpio-controller
- "#gpio-cells"
- gpio-ranges
"^func-[0-9a-z-]+$":
type: object
additionalProperties: false
patternProperties:
"^group-[0-9a-z-]+$":
type: object
allOf:
- $ref: /schemas/pinctrl/pincfg-node.yaml
- $ref: /schemas/pinctrl/pinmux-node.yaml
required:
- pinmux
required:
- compatible
- "#address-cells"
- "#size-cells"
- ranges
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/amlogic,pinctrl.h>
apb {
#address-cells = <2>;
#size-cells = <2>;
periphs_pinctrl: pinctrl {
compatible = "amlogic,pinctrl-a4";
#address-cells = <2>;
#size-cells = <2>;
ranges;
gpio@4240 {
reg = <0 0x4240 0 0x40>, <0 0x4000 0 0x8>;
reg-names = "gpio", "mux";
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&periphs_pinctrl 0 8 10>;
};
func-uart-b {
group-default {
pinmux = <AML_PINMUX(AMLOGIC_GPIO_B, 1, 4)>;
bias-pull-up;
drive-strength-microamp = <4000>;
};
group-pins1 {
pinmux = <AML_PINMUX(AMLOGIC_GPIO_B, 5, 2)>;
bias-pull-up;
drive-strength-microamp = <4000>;
};
};
func-uart-c {
group-default {
pinmux = <AML_PINMUX(AMLOGIC_GPIO_B, 3, 1)>,
<AML_PINMUX(AMLOGIC_GPIO_B, 2, 1)>;
bias-pull-up;
drive-strength-microamp = <4000>;
};
};
};
};
|
