summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/spi/renesas,rspi.yaml
blob: 4d8ec69214c971e9c8bf43d05a809bb00bccfa13 (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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/renesas,rspi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas (Quad) Serial Peripheral Interface (RSPI/QSPI)

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

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - renesas,rspi-sh7757    # SH7757
          - const: renesas,rspi        # Legacy SH

      - items:
          - enum:
              - renesas,rspi-r7s72100  # RZ/A1H
              - renesas,rspi-r7s9210   # RZ/A2
              - renesas,r9a07g043-rspi # RZ/G2UL
              - renesas,r9a07g044-rspi # RZ/G2{L,LC}
              - renesas,r9a07g054-rspi # RZ/V2L
          - const: renesas,rspi-rz

      - items:
          - enum:
              - renesas,qspi-r8a7742   # RZ/G1H
              - renesas,qspi-r8a7743   # RZ/G1M
              - renesas,qspi-r8a7744   # RZ/G1N
              - renesas,qspi-r8a7745   # RZ/G1E
              - renesas,qspi-r8a77470  # RZ/G1C
              - renesas,qspi-r8a7790   # R-Car H2
              - renesas,qspi-r8a7791   # R-Car M2-W
              - renesas,qspi-r8a7792   # R-Car V2H
              - renesas,qspi-r8a7793   # R-Car M2-N
              - renesas,qspi-r8a7794   # R-Car E2
          - const: renesas,qspi        # R-Car Gen2 and RZ/G1

  reg:
    maxItems: 1

  interrupts:
    oneOf:
      - items:
          - description: A combined interrupt
      - items:
          - description: Error interrupt (SPEI)
          - description: Receive Interrupt (SPRI)
          - description: Transmit Interrupt (SPTI)

  interrupt-names:
    oneOf:
      - items:
          - const: mux
      - items:
          - const: error
          - const: rx
          - const: tx

  clocks:
    maxItems: 1

  power-domains:
    maxItems: 1

  resets:
    maxItems: 1

  dmas:
    minItems: 2
    maxItems: 4
    description:
      Must contain a list of pairs of references to DMA specifiers, one for
      transmission, and one for reception.

  dma-names:
    minItems: 2
    maxItems: 4
    items:
      enum:
        - tx
        - rx

  num-cs:
    description: |
      Total number of native chip selects.
      Hardware limitations related to chip selects:
        - When using GPIO chip selects, at least one native chip select must
          be left unused, as it will be driven anyway.
    minimum: 1
    maximum: 2
    default: 1

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - power-domains
  - '#address-cells'
  - '#size-cells'

allOf:
  - $ref: spi-controller.yaml#
  - if:
      properties:
        compatible:
          contains:
            enum:
              - renesas,rspi-rz
    then:
      properties:
        interrupts:
          minItems: 3
      required:
        - interrupt-names

  - if:
      properties:
        compatible:
          contains:
            enum:
              - renesas,qspi
              - renesas,r9a07g043-rspi
              - renesas,r9a07g044-rspi
              - renesas,r9a07g054-rspi
    then:
      required:
        - resets

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/power/r8a7791-sysc.h>

    qspi: spi@e6b10000 {
        compatible = "renesas,qspi-r8a7791", "renesas,qspi";
        reg = <0xe6b10000 0x2c>;
        interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&cpg CPG_MOD 917>;
        dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
        dma-names = "tx", "rx", "tx", "rx";
        power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
        resets = <&cpg 917>;
        num-cs = <1>;
        #address-cells = <1>;
        #size-cells = <0>;
    };