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-r8a7743       # RZ/G1M
25              - renesas,msiof-r8a7744       # RZ/G1N
26              - renesas,msiof-r8a7745       # RZ/G1E
27              - renesas,msiof-r8a77470      # RZ/G1C
28              - renesas,msiof-r8a7790       # R-Car H2
29              - renesas,msiof-r8a7791       # R-Car M2-W
30              - renesas,msiof-r8a7792       # R-Car V2H
31              - renesas,msiof-r8a7793       # R-Car M2-N
32              - renesas,msiof-r8a7794       # R-Car E2
33          - const: renesas,rcar-gen2-msiof  # generic R-Car Gen2 and RZ/G1
34                                            # compatible device
35      - items:
36          - enum:
37              - renesas,msiof-r8a774a1      # RZ/G2M
38              - renesas,msiof-r8a774b1      # RZ/G2N
39              - renesas,msiof-r8a774c0      # RZ/G2E
40              - renesas,msiof-r8a7795       # R-Car H3
41              - renesas,msiof-r8a7796       # R-Car M3-W
42              - renesas,msiof-r8a77965      # R-Car M3-N
43              - renesas,msiof-r8a77970      # R-Car V3M
44              - renesas,msiof-r8a77980      # R-Car V3H
45              - renesas,msiof-r8a77990      # R-Car E3
46              - renesas,msiof-r8a77995      # R-Car D3
47          - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
48                                            # compatible device
49      - items:
50          - const: renesas,sh-msiof  # deprecated
51
52  reg:
53    minItems: 1
54    maxItems: 2
55    oneOf:
56      - items:
57          - description: CPU and DMA engine registers
58      - items:
59          - description: CPU registers
60          - description: DMA engine registers
61
62  interrupts:
63    maxItems: 1
64
65  clocks:
66    maxItems: 1
67
68  num-cs:
69    description: |
70      Total number of chip selects (default is 1).
71      Up to 3 native chip selects are supported:
72        0: MSIOF_SYNC
73        1: MSIOF_SS1
74        2: MSIOF_SS2
75      Hardware limitations related to chip selects:
76        - Native chip selects are always deasserted in between transfers
77          that are part of the same message.  Use cs-gpios to work around
78          this.
79        - All slaves using native chip selects must use the same spi-cs-high
80          configuration.  Use cs-gpios to work around this.
81        - When using GPIO chip selects, at least one native chip select must
82          be left unused, as it will be driven anyway.
83    minimum: 1
84    maximum: 3
85    default: 1
86
87  dmas:
88    minItems: 2
89    maxItems: 4
90
91  dma-names:
92    minItems: 2
93    maxItems: 4
94    items:
95      enum: [ tx, rx ]
96
97  renesas,dtdl:
98    description: delay sync signal (setup) in transmit mode.
99    allOf:
100      - $ref: /schemas/types.yaml#/definitions/uint32
101      - enum:
102          - 0    # no bit delay
103          - 50   # 0.5-clock-cycle delay
104          - 100  # 1-clock-cycle delay
105          - 150  # 1.5-clock-cycle delay
106          - 200  # 2-clock-cycle delay
107
108  renesas,syncdl:
109    description: delay sync signal (hold) in transmit mode
110    allOf:
111      - $ref: /schemas/types.yaml#/definitions/uint32
112      - enum:
113          - 0    # no bit delay
114          - 50   # 0.5-clock-cycle delay
115          - 100  # 1-clock-cycle delay
116          - 150  # 1.5-clock-cycle delay
117          - 200  # 2-clock-cycle delay
118          - 300  # 3-clock-cycle delay
119
120  renesas,tx-fifo-size:
121    # deprecated for soctype-specific bindings
122    description: |
123      Override the default TX fifo size.  Unit is words.  Ignored if 0.
124    allOf:
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    allOf:
134      - $ref: /schemas/types.yaml#/definitions/uint32
135      - maxItems: 1
136    default: 64
137
138required:
139  - compatible
140  - reg
141  - interrupts
142  - '#address-cells'
143  - '#size-cells'
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 = <0 0xe6e20000 0 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