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
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/mediatek,uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek Universal Asynchronous Receiver/Transmitter (UART)
maintainers:
- Matthias Brugger <matthias.bgg@gmail.com>
allOf:
- $ref: serial.yaml#
description: |
The MediaTek UART is based on the basic 8250 UART and compatible
with 16550A, with enhancements for high speed baud rates and
support for DMA.
properties:
compatible:
oneOf:
- const: mediatek,mt6577-uart
- items:
- enum:
- mediatek,mt2701-uart
- mediatek,mt2712-uart
- mediatek,mt6580-uart
- mediatek,mt6582-uart
- mediatek,mt6589-uart
- mediatek,mt6755-uart
- mediatek,mt6765-uart
- mediatek,mt6779-uart
- mediatek,mt6795-uart
- mediatek,mt6797-uart
- mediatek,mt7622-uart
- mediatek,mt7623-uart
- mediatek,mt7629-uart
- mediatek,mt7986-uart
- mediatek,mt8127-uart
- mediatek,mt8135-uart
- mediatek,mt8173-uart
- mediatek,mt8183-uart
- mediatek,mt8186-uart
- mediatek,mt8188-uart
- mediatek,mt8192-uart
- mediatek,mt8195-uart
- mediatek,mt8365-uart
- mediatek,mt8516-uart
- const: mediatek,mt6577-uart
reg:
description: The base address of the UART register bank
maxItems: 1
clocks:
minItems: 1
items:
- description: The clock the baudrate is derived from
- description: The bus clock for register accesses
clock-names:
minItems: 1
items:
- const: baud
- const: bus
dmas:
items:
- description: phandle to TX DMA
- description: phandle to RX DMA
dma-names:
items:
- const: tx
- const: rx
interrupts:
minItems: 1
maxItems: 2
interrupt-names:
description:
The UART interrupt and optionally the RX in-band wakeup interrupt.
minItems: 1
items:
- const: uart
- const: wakeup
pinctrl-0: true
pinctrl-1: true
pinctrl-names:
minItems: 1
items:
- const: default
- const: sleep
required:
- compatible
- reg
- clocks
- interrupts
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
serial@11006000 {
compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart";
reg = <0x11006000 0x400>;
interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>,
<GIC_SPI 52 IRQ_TYPE_EDGE_FALLING>;
interrupt-names = "uart", "wakeup";
clocks = <&uart_clk>, <&bus_clk>;
clock-names = "baud", "bus";
pinctrl-0 = <&uart_pin>;
pinctrl-1 = <&uart_pin_sleep>;
pinctrl-names = "default", "sleep";
};
|
