summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/serial/renesas,sci.yaml
blob: 9f7305200c47e96fc7f9e4a938555557202ffc08 (plain)
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
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/renesas,sci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas Serial Communication Interface

maintainers:
  - Geert Uytterhoeven <geert+renesas@glider.be>

allOf:
  - $ref: serial.yaml#

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - renesas,r9a07g043-sci     # RZ/G2UL
              - renesas,r9a07g044-sci     # RZ/G2{L,LC}
              - renesas,r9a07g054-sci     # RZ/V2L
          - const: renesas,sci            # generic SCI compatible UART

      - items:
          - const: renesas,sci            # generic SCI compatible UART

  reg:
    maxItems: 1

  interrupts:
    items:
      - description: Error interrupt
      - description: Receive buffer full interrupt
      - description: Transmit buffer empty interrupt
      - description: Transmit end interrupt

  interrupt-names:
    items:
      - const: eri
      - const: rxi
      - const: txi
      - const: tei

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    minItems: 1
    maxItems: 2
    items:
      enum:
        - fck # UART functional clock
        - sck # optional external clock input

  uart-has-rtscts: false

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

if:
  properties:
    compatible:
      contains:
        enum:
          - renesas,r9a07g043-sci
          - renesas,r9a07g044-sci
          - renesas,r9a07g054-sci
then:
  properties:
    resets:
      maxItems: 1

    power-domains:
      maxItems: 1

  required:
    - resets
    - power-domains

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/r9a07g044-cpg.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    aliases {
        serial0 = &sci0;
    };

    sci0: serial@1004d000 {
        compatible = "renesas,r9a07g044-sci", "renesas,sci";
        reg = <0x1004d000 0x400>;
        interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "eri", "rxi", "txi", "tei";
        clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
        clock-names = "fck";
        power-domains = <&cpg>;
        resets = <&cpg R9A07G044_SCI0_RST>;
    };