1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright 2019 Unisoc Inc.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/serial/sprd-uart.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Spreadtrum serial UART
9
10maintainers:
11  - Orson Zhai <orsonzhai@gmail.com>
12  - Baolin Wang <baolin.wang7@gmail.com>
13  - Chunyan Zhang <zhang.lyra@gmail.com>
14
15properties:
16  compatible:
17    oneOf:
18      - items:
19          - enum:
20              - sprd,ums9632-uart
21          - const: sprd,sc9632-uart
22      - items:
23          - enum:
24              - sprd,sc9860-uart
25              - sprd,sc9863a-uart
26              - sprd,ums512-uart
27              - sprd,ums9620-uart
28          - const: sprd,sc9836-uart
29      - enum:
30          - sprd,sc9632-uart
31          - sprd,sc9836-uart
32
33  reg:
34    maxItems: 1
35
36  interrupts:
37    maxItems: 1
38
39  clocks:
40    minItems: 1
41    maxItems: 3
42
43  clock-names:
44    description: |
45      "enable" for UART module enable clock, "uart" for UART clock, "source"
46      for UART source (parent) clock.
47    items:
48      - const: enable
49      - const: uart
50      - const: source
51
52  dmas:
53    minItems: 1
54    maxItems: 2
55
56  dma-names:
57    minItems: 1
58    items:
59      - const: rx
60      - const: tx
61
62required:
63  - compatible
64  - reg
65  - interrupts
66
67additionalProperties: false
68
69examples:
70  - |
71    #include <dt-bindings/interrupt-controller/arm-gic.h>
72    serial@0 {
73      compatible = "sprd,sc9860-uart", "sprd,sc9836-uart";
74      reg = <0x0 0x100>;
75      interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
76      dma-names = "rx", "tx";
77      dmas = <&ap_dma 19>, <&ap_dma 20>;
78      clock-names = "enable", "uart", "source";
79      clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
80    };
81
82...
83