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,sc9860-uart
21          - const: sprd,sc9836-uart
22      - const: sprd,sc9836-uart
23
24  reg:
25    maxItems: 1
26
27  interrupts:
28    maxItems: 1
29
30  clocks:
31    minItems: 1
32    maxItems: 3
33
34  clock-names:
35    description: |
36      "enable" for UART module enable clock, "uart" for UART clock, "source"
37      for UART source (parent) clock.
38    items:
39      - const: enable
40      - const: uart
41      - const: source
42
43  dmas:
44    minItems: 1
45    maxItems: 2
46
47  dma-names:
48    minItems: 1
49    items:
50      - const: rx
51      - const: tx
52
53required:
54  - compatible
55  - reg
56  - interrupts
57
58examples:
59  - |
60    #include <dt-bindings/interrupt-controller/arm-gic.h>
61    serial@0 {
62      compatible = "sprd,sc9860-uart", "sprd,sc9836-uart";
63      reg = <0x0 0x100>;
64      interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
65      dma-names = "rx", "tx";
66      dmas = <&ap_dma 19>, <&ap_dma 20>;
67      clock-names = "enable", "uart", "source";
68      clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
69    };
70
71...
72