dt-bindings: misc: explicitly add #address-cells for slave mode
[platform/kernel/linux-rpi.git] / Documentation / devicetree / bindings / spi / renesas,sh-msiof.yaml
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
7 title: Renesas MSIOF SPI controller
8
9 maintainers:
10   - Geert Uytterhoeven <geert+renesas@glider.be>
11
12 allOf:
13   - $ref: spi-controller.yaml#
14
15 properties:
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-r8a77965      # R-Car M3-N
45               - renesas,msiof-r8a77970      # R-Car V3M
46               - renesas,msiof-r8a77980      # R-Car V3H
47               - renesas,msiof-r8a77990      # R-Car E3
48               - renesas,msiof-r8a77995      # R-Car D3
49           - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
50                                             # compatible device
51       - items:
52           - const: renesas,sh-msiof  # deprecated
53
54   reg:
55     minItems: 1
56     maxItems: 2
57     oneOf:
58       - items:
59           - description: CPU and DMA engine registers
60       - items:
61           - description: CPU registers
62           - description: DMA engine registers
63
64   interrupts:
65     maxItems: 1
66
67   clocks:
68     maxItems: 1
69
70   num-cs:
71     description: |
72       Total number of chip selects (default is 1).
73       Up to 3 native chip selects are supported:
74         0: MSIOF_SYNC
75         1: MSIOF_SS1
76         2: MSIOF_SS2
77       Hardware limitations related to chip selects:
78         - Native chip selects are always deasserted in between transfers
79           that are part of the same message.  Use cs-gpios to work around
80           this.
81         - All slaves using native chip selects must use the same spi-cs-high
82           configuration.  Use cs-gpios to work around this.
83         - When using GPIO chip selects, at least one native chip select must
84           be left unused, as it will be driven anyway.
85     minimum: 1
86     maximum: 3
87     default: 1
88
89   dmas:
90     minItems: 2
91     maxItems: 4
92
93   dma-names:
94     minItems: 2
95     maxItems: 4
96     items:
97       enum: [ tx, rx ]
98
99   renesas,dtdl:
100     description: delay sync signal (setup) in transmit mode.
101     $ref: /schemas/types.yaml#/definitions/uint32
102     enum:
103       - 0        # no bit delay
104       - 50       # 0.5-clock-cycle delay
105       - 100      # 1-clock-cycle delay
106       - 150      # 1.5-clock-cycle delay
107       - 200      # 2-clock-cycle delay
108
109   renesas,syncdl:
110     description: delay sync signal (hold) in transmit mode
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     $ref: /schemas/types.yaml#/definitions/uint32
125     maxItems: 1
126     default: 64
127
128   renesas,rx-fifo-size:
129     # deprecated for soctype-specific bindings
130     description: |
131       Override the default RX fifo size.  Unit is words.  Ignored if 0.
132     $ref: /schemas/types.yaml#/definitions/uint32
133     maxItems: 1
134     default: 64
135
136 required:
137   - compatible
138   - reg
139   - interrupts
140   - '#address-cells'
141   - '#size-cells'
142
143 unevaluatedProperties: false
144
145 examples:
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     };