xref: /freebsd/sys/contrib/device-tree/Bindings/spi/renesas,sh-msiof.yaml (revision b197d4b893974c9eb4d7b38704c6d5c486235d6f) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/renesas,sh-msiof.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas MSIOF SPI controller
8
9maintainers:
10  - Geert Uytterhoeven <geert+renesas@glider.be>
11
12allOf:
13  - $ref: spi-controller.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - items:
19          - const: renesas,msiof-sh73a0     # SH-Mobile AG5
20          - const: renesas,sh-mobile-msiof  # generic SH-Mobile compatible
21                                            # device
22      - items:
23          - enum:
24              - renesas,msiof-r8a7742       # RZ/G1H
25              - renesas,msiof-r8a7743       # RZ/G1M
26              - renesas,msiof-r8a7744       # RZ/G1N
27              - renesas,msiof-r8a7745       # RZ/G1E
28              - renesas,msiof-r8a77470      # RZ/G1C
29              - renesas,msiof-r8a7790       # R-Car H2
30              - renesas,msiof-r8a7791       # R-Car M2-W
31              - renesas,msiof-r8a7792       # R-Car V2H
32              - renesas,msiof-r8a7793       # R-Car M2-N
33              - renesas,msiof-r8a7794       # R-Car E2
34          - const: renesas,rcar-gen2-msiof  # generic R-Car Gen2 and RZ/G1
35                                            # compatible device
36      - items:
37          - enum:
38              - renesas,msiof-r8a774a1      # RZ/G2M
39              - renesas,msiof-r8a774b1      # RZ/G2N
40              - renesas,msiof-r8a774c0      # RZ/G2E
41              - renesas,msiof-r8a774e1      # RZ/G2H
42              - renesas,msiof-r8a7795       # R-Car H3
43              - renesas,msiof-r8a7796       # R-Car M3-W
44              - renesas,msiof-r8a77961      # R-Car M3-W+
45              - renesas,msiof-r8a77965      # R-Car M3-N
46              - renesas,msiof-r8a77970      # R-Car V3M
47              - renesas,msiof-r8a77980      # R-Car V3H
48              - renesas,msiof-r8a77990      # R-Car E3
49              - renesas,msiof-r8a77995      # R-Car D3
50              - renesas,msiof-r8a779a0      # R-Car V3U
51          - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
52                                            # compatible device
53      - items:
54          - const: renesas,sh-msiof  # deprecated
55
56  reg:
57    minItems: 1
58    maxItems: 2
59    oneOf:
60      - items:
61          - description: CPU and DMA engine registers
62      - items:
63          - description: CPU registers
64          - description: DMA engine registers
65
66  interrupts:
67    maxItems: 1
68
69  clocks:
70    maxItems: 1
71
72  num-cs:
73    description: |
74      Total number of chip selects (default is 1).
75      Up to 3 native chip selects are supported:
76        0: MSIOF_SYNC
77        1: MSIOF_SS1
78        2: MSIOF_SS2
79      Hardware limitations related to chip selects:
80        - Native chip selects are always deasserted in between transfers
81          that are part of the same message.  Use cs-gpios to work around
82          this.
83        - All slaves using native chip selects must use the same spi-cs-high
84          configuration.  Use cs-gpios to work around this.
85        - When using GPIO chip selects, at least one native chip select must
86          be left unused, as it will be driven anyway.
87    minimum: 1
88    maximum: 3
89    default: 1
90
91  dmas:
92    minItems: 2
93    maxItems: 4
94
95  dma-names:
96    minItems: 2
97    maxItems: 4
98    items:
99      enum: [ tx, rx ]
100
101  renesas,dtdl:
102    description: delay sync signal (setup) in transmit mode.
103    $ref: /schemas/types.yaml#/definitions/uint32
104    enum:
105      - 0        # no bit delay
106      - 50       # 0.5-clock-cycle delay
107      - 100      # 1-clock-cycle delay
108      - 150      # 1.5-clock-cycle delay
109      - 200      # 2-clock-cycle delay
110
111  renesas,syncdl:
112    description: delay sync signal (hold) in transmit mode
113    $ref: /schemas/types.yaml#/definitions/uint32
114    enum:
115      - 0        # no bit delay
116      - 50       # 0.5-clock-cycle delay
117      - 100      # 1-clock-cycle delay
118      - 150      # 1.5-clock-cycle delay
119      - 200      # 2-clock-cycle delay
120      - 300      # 3-clock-cycle delay
121
122  renesas,tx-fifo-size:
123    # deprecated for soctype-specific bindings
124    description: |
125      Override the default TX fifo size.  Unit is words.  Ignored if 0.
126    $ref: /schemas/types.yaml#/definitions/uint32
127    default: 64
128
129  renesas,rx-fifo-size:
130    # deprecated for soctype-specific bindings
131    description: |
132      Override the default RX fifo size.  Unit is words.  Ignored if 0.
133    $ref: /schemas/types.yaml#/definitions/uint32
134    default: 64
135
136required:
137  - compatible
138  - reg
139  - interrupts
140  - '#address-cells'
141  - '#size-cells'
142
143unevaluatedProperties: false
144
145examples:
146  - |
147    #include <dt-bindings/clock/r8a7791-clock.h>
148    #include <dt-bindings/interrupt-controller/irq.h>
149
150    msiof0: spi@e6e20000 {
151        compatible = "renesas,msiof-r8a7791", "renesas,rcar-gen2-msiof";
152        reg = <0xe6e20000 0x0064>;
153        interrupts = <0 156 IRQ_TYPE_LEVEL_HIGH>;
154        clocks = <&mstp0_clks R8A7791_CLK_MSIOF0>;
155        dmas = <&dmac0 0x51>, <&dmac0 0x52>;
156        dma-names = "tx", "rx";
157        #address-cells = <1>;
158        #size-cells = <0>;
159    };
160