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          - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
51                                            # compatible device
52      - items:
53          - const: renesas,sh-msiof  # deprecated
54
55  reg:
56    minItems: 1
57    maxItems: 2
58    oneOf:
59      - items:
60          - description: CPU and DMA engine registers
61      - items:
62          - description: CPU registers
63          - description: DMA engine registers
64
65  interrupts:
66    maxItems: 1
67
68  clocks:
69    maxItems: 1
70
71  num-cs:
72    description: |
73      Total number of chip selects (default is 1).
74      Up to 3 native chip selects are supported:
75        0: MSIOF_SYNC
76        1: MSIOF_SS1
77        2: MSIOF_SS2
78      Hardware limitations related to chip selects:
79        - Native chip selects are always deasserted in between transfers
80          that are part of the same message.  Use cs-gpios to work around
81          this.
82        - All slaves using native chip selects must use the same spi-cs-high
83          configuration.  Use cs-gpios to work around this.
84        - When using GPIO chip selects, at least one native chip select must
85          be left unused, as it will be driven anyway.
86    minimum: 1
87    maximum: 3
88    default: 1
89
90  dmas:
91    minItems: 2
92    maxItems: 4
93
94  dma-names:
95    minItems: 2
96    maxItems: 4
97    items:
98      enum: [ tx, rx ]
99
100  renesas,dtdl:
101    description: delay sync signal (setup) in transmit mode.
102    $ref: /schemas/types.yaml#/definitions/uint32
103    enum:
104      - 0        # no bit delay
105      - 50       # 0.5-clock-cycle delay
106      - 100      # 1-clock-cycle delay
107      - 150      # 1.5-clock-cycle delay
108      - 200      # 2-clock-cycle delay
109
110  renesas,syncdl:
111    description: delay sync signal (hold) in transmit mode
112    $ref: /schemas/types.yaml#/definitions/uint32
113    enum:
114      - 0        # no bit delay
115      - 50       # 0.5-clock-cycle delay
116      - 100      # 1-clock-cycle delay
117      - 150      # 1.5-clock-cycle delay
118      - 200      # 2-clock-cycle delay
119      - 300      # 3-clock-cycle delay
120
121  renesas,tx-fifo-size:
122    # deprecated for soctype-specific bindings
123    description: |
124      Override the default TX fifo size.  Unit is words.  Ignored if 0.
125    $ref: /schemas/types.yaml#/definitions/uint32
126    maxItems: 1
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    maxItems: 1
135    default: 64
136
137required:
138  - compatible
139  - reg
140  - interrupts
141  - '#address-cells'
142  - '#size-cells'
143
144unevaluatedProperties: false
145
146examples:
147  - |
148    #include <dt-bindings/clock/r8a7791-clock.h>
149    #include <dt-bindings/interrupt-controller/irq.h>
150
151    msiof0: spi@e6e20000 {
152        compatible = "renesas,msiof-r8a7791", "renesas,rcar-gen2-msiof";
153        reg = <0xe6e20000 0x0064>;
154        interrupts = <0 156 IRQ_TYPE_LEVEL_HIGH>;
155        clocks = <&mstp0_clks R8A7791_CLK_MSIOF0>;
156        dmas = <&dmac0 0x51>, <&dmac0 0x52>;
157        dma-names = "tx", "rx";
158        #address-cells = <1>;
159        #size-cells = <0>;
160    };
161