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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/st,stm32-timers.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: STMicroelectronics STM32 Timers bindings
description: |
This hardware block provides 3 types of timer along with PWM functionality:
- advanced-control timers consist of a 16-bit auto-reload counter driven
by a programmable prescaler, break input feature, PWM outputs and
complementary PWM outputs channels.
- general-purpose timers consist of a 16-bit or 32-bit auto-reload counter
driven by a programmable prescaler and PWM outputs.
- basic timers consist of a 16-bit auto-reload counter driven by a
programmable prescaler.
maintainers:
- Benjamin Gaignard <benjamin.gaignard@st.com>
- Fabrice Gasnier <fabrice.gasnier@st.com>
properties:
compatible:
const: st,stm32-timers
reg:
maxItems: 1
clocks:
maxItems: 1
clock-names:
items:
- const: int
reset:
maxItems: 1
dmas:
minItems: 1
maxItems: 7
dma-names:
items:
enum: [ ch1, ch2, ch3, ch4, up, trig, com ]
minItems: 1
maxItems: 7
"#address-cells":
const: 1
"#size-cells":
const: 0
pwm:
type: object
properties:
compatible:
const: st,stm32-pwm
"#pwm-cells":
const: 3
st,breakinput:
description:
One or two <index level filter> to describe break input
configurations.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-matrix
- items:
items:
- description: |
"index" indicates on which break input (0 or 1) the
configuration should be applied.
enum: [ 0 , 1]
- description: |
"level" gives the active level (0=low or 1=high) of the
input signal for this configuration
enum: [ 0, 1 ]
- description: |
"filter" gives the filtering value (up to 15) to be applied.
maximum: 15
minItems: 1
maxItems: 2
required:
- "#pwm-cells"
- compatible
patternProperties:
"^timer@[0-9]+$":
type: object
properties:
compatible:
enum:
- st,stm32-timer-trigger
- st,stm32h7-timer-trigger
reg:
description: Identify trigger hardware block.
items:
minimum: 0
maximum: 16
required:
- compatible
- reg
counter:
type: object
properties:
compatible:
const: st,stm32-timer-counter
required:
- compatible
required:
- "#address-cells"
- "#size-cells"
- compatible
- reg
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/stm32mp1-clks.h>
timers2: timers@40000000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "st,stm32-timers";
reg = <0x40000000 0x400>;
clocks = <&rcc TIM2_K>;
clock-names = "int";
dmas = <&dmamux1 18 0x400 0x1>,
<&dmamux1 19 0x400 0x1>,
<&dmamux1 20 0x400 0x1>,
<&dmamux1 21 0x400 0x1>,
<&dmamux1 22 0x400 0x1>;
dma-names = "ch1", "ch2", "ch3", "ch4", "up";
pwm {
compatible = "st,stm32-pwm";
#pwm-cells = <3>;
st,breakinput = <0 1 5>;
};
timer@0 {
compatible = "st,stm32-timer-trigger";
reg = <0>;
};
counter {
compatible = "st,stm32-timer-counter";
};
};
...
|
