xref: /linux/Documentation/devicetree/bindings/serial/mediatek,uart.yaml (revision 3a38ef2b3cb6b63c105247b5ea4a9cf600e673f0) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/mediatek,uart.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek Universal Asynchronous Receiver/Transmitter (UART)
8
9maintainers:
10  - Matthias Brugger <matthias.bgg@gmail.com>
11
12allOf:
13  - $ref: serial.yaml#
14
15description: |
16  The MediaTek UART is based on the basic 8250 UART and compatible
17  with 16550A, with enhancements for high speed baud rates and
18  support for DMA.
19
20properties:
21  compatible:
22    oneOf:
23      - const: mediatek,mt6577-uart
24      - items:
25          - enum:
26              - mediatek,mt2701-uart
27              - mediatek,mt2712-uart
28              - mediatek,mt6580-uart
29              - mediatek,mt6582-uart
30              - mediatek,mt6589-uart
31              - mediatek,mt6755-uart
32              - mediatek,mt6765-uart
33              - mediatek,mt6779-uart
34              - mediatek,mt6795-uart
35              - mediatek,mt6797-uart
36              - mediatek,mt7622-uart
37              - mediatek,mt7623-uart
38              - mediatek,mt7629-uart
39              - mediatek,mt7986-uart
40              - mediatek,mt8127-uart
41              - mediatek,mt8135-uart
42              - mediatek,mt8173-uart
43              - mediatek,mt8183-uart
44              - mediatek,mt8186-uart
45              - mediatek,mt8188-uart
46              - mediatek,mt8192-uart
47              - mediatek,mt8195-uart
48              - mediatek,mt8516-uart
49          - const: mediatek,mt6577-uart
50
51  reg:
52    description: The base address of the UART register bank
53    maxItems: 1
54
55  clocks:
56    minItems: 1
57    items:
58      - description: The clock the baudrate is derived from
59      - description: The bus clock for register accesses
60
61  clock-names:
62    minItems: 1
63    items:
64      - const: baud
65      - const: bus
66
67  dmas:
68    items:
69      - description: phandle to TX DMA
70      - description: phandle to RX DMA
71
72  dma-names:
73    items:
74      - const: tx
75      - const: rx
76
77  interrupts:
78    minItems: 1
79    maxItems: 2
80
81  interrupt-names:
82    description:
83      The UART interrupt and optionally the RX in-band wakeup interrupt.
84    minItems: 1
85    items:
86      - const: uart
87      - const: wakeup
88
89  pinctrl-0: true
90  pinctrl-1: true
91
92  pinctrl-names:
93    minItems: 1
94    items:
95      - const: default
96      - const: sleep
97
98required:
99  - compatible
100  - reg
101  - clocks
102  - interrupts
103
104unevaluatedProperties: false
105
106examples:
107  - |
108    #include <dt-bindings/interrupt-controller/arm-gic.h>
109
110    serial@11006000 {
111        compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart";
112        reg = <0x11006000 0x400>;
113        interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>,
114                     <GIC_SPI 52 IRQ_TYPE_EDGE_FALLING>;
115        interrupt-names = "uart", "wakeup";
116        clocks = <&uart_clk>, <&bus_clk>;
117        clock-names = "baud", "bus";
118        pinctrl-0 = <&uart_pin>;
119        pinctrl-1 = <&uart_pin_sleep>;
120        pinctrl-names = "default", "sleep";
121    };
122