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
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/brcm,bcm7271-uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom 8250 based serial port
maintainers:
- Al Cooper <alcooperx@gmail.com>
allOf:
- $ref: serial.yaml#
description: |+
The Broadcom UART is based on the basic 8250 UART but with
enhancements for more accurate high speed baud rates and support
for DMA.
properties:
compatible:
items:
- enum:
- brcm,bcm7271-uart
- brcm,bcm7278-uart
reg:
minItems: 1
maxItems: 5
reg-names:
description: The UART register block and optionally the DMA register blocks.
oneOf:
- items:
- const: uart
- items:
- const: uart
- const: dma_arb
- const: dma_rx
- const: dma_tx
- const: dma_intr2
clocks:
minItems: 1
clock-names:
const: sw_baud
interrupts:
minItems: 1
maxItems: 2
interrupt-names:
description: The UART interrupt and optionally the DMA interrupt.
minItems: 1
items:
- const: uart
- const: dma
required:
- compatible
- reg
- reg-names
- clocks
- clock-names
- interrupts
- interrupt-names
unevaluatedProperties: false
examples:
- |
serial@840d000 {
compatible = "brcm,bcm7271-uart";
reg = <0x840d000 0x20>;
reg-names = "uart";
interrupts = <0x0 0x62 0x4>;
interrupt-names = "uart";
clocks = <&scmi_clk 190>;
clock-names = "sw_baud";
};
serial@840e000 {
compatible = "brcm,bcm7271-uart";
reg = <0x840e000 0x20>,
<0x840e080 0x8>,
<0x840e100 0xa8>,
<0x840e200 0x4c>,
<0x840e300 0x30>;
reg-names = "uart", "dma_arb", "dma_rx", "dma_tx", "dma_intr2";
interrupts = <0x0 0x62 0x4>, <0x0 0x75 0x4>;
interrupt-names = "uart", "dma";
clocks = <&scmi_clk 190>;
clock-names = "sw_baud";
};
|
