1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/spi/renesas,rspi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Renesas (Quad) Serial Peripheral Interface (RSPI/QSPI)
8
9 maintainers:
10 - Geert Uytterhoeven <geert+renesas@glider.be>
11
12 properties:
13 compatible:
14 oneOf:
15 - items:
16 - enum:
17 - renesas,rspi-sh7757 # SH7757
18 - const: renesas,rspi # Legacy SH
19
20 - items:
21 - enum:
22 - renesas,rspi-r7s72100 # RZ/A1H
23 - renesas,rspi-r7s9210 # RZ/A2
24 - renesas,r9a07g043-rspi # RZ/G2UL and RZ/Five
25 - renesas,r9a07g044-rspi # RZ/G2{L,LC}
26 - renesas,r9a07g054-rspi # RZ/V2L
27 - const: renesas,rspi-rz
28
29 - items:
30 - enum:
31 - renesas,qspi-r8a7742 # RZ/G1H
32 - renesas,qspi-r8a7743 # RZ/G1M
33 - renesas,qspi-r8a7744 # RZ/G1N
34 - renesas,qspi-r8a7745 # RZ/G1E
35 - renesas,qspi-r8a77470 # RZ/G1C
36 - renesas,qspi-r8a7790 # R-Car H2
37 - renesas,qspi-r8a7791 # R-Car M2-W
38 - renesas,qspi-r8a7792 # R-Car V2H
39 - renesas,qspi-r8a7793 # R-Car M2-N
40 - renesas,qspi-r8a7794 # R-Car E2
41 - const: renesas,qspi # R-Car Gen2 and RZ/G1
42
43 reg:
44 maxItems: 1
45
46 interrupts:
47 oneOf:
48 - items:
49 - description: A combined interrupt
50 - items:
51 - description: Error interrupt (SPEI)
52 - description: Receive Interrupt (SPRI)
53 - description: Transmit Interrupt (SPTI)
54
55 interrupt-names:
56 oneOf:
57 - items:
58 - const: mux
59 - items:
60 - const: error
61 - const: rx
62 - const: tx
63
64 clocks:
65 maxItems: 1
66
67 power-domains:
68 maxItems: 1
69
70 resets:
71 maxItems: 1
72
73 dmas:
74 minItems: 2
75 maxItems: 4
76 description:
77 Must contain a list of pairs of references to DMA specifiers, one for
78 transmission, and one for reception.
79
80 dma-names:
81 minItems: 2
82 maxItems: 4
83 items:
84 enum:
85 - tx
86 - rx
87
88 num-cs:
89 description: |
90 Total number of native chip selects.
91 Hardware limitations related to chip selects:
92 - When using GPIO chip selects, at least one native chip select must
93 be left unused, as it will be driven anyway.
94 minimum: 1
95 maximum: 2
96 default: 1
97
98 required:
99 - compatible
100 - reg
101 - interrupts
102 - clocks
103 - power-domains
104 - '#address-cells'
105 - '#size-cells'
106
107 allOf:
108 - $ref: spi-controller.yaml#
109 - if:
110 properties:
111 compatible:
112 contains:
113 enum:
114 - renesas,rspi-rz
115 then:
116 properties:
117 interrupts:
118 minItems: 3
119 required:
120 - interrupt-names
121
122 - if:
123 properties:
124 compatible:
125 contains:
126 enum:
127 - renesas,qspi
128 - renesas,r9a07g043-rspi
129 - renesas,r9a07g044-rspi
130 - renesas,r9a07g054-rspi
131 then:
132 required:
133 - resets
134
135 unevaluatedProperties: false
136
137 examples:
138 - |
139 #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
140 #include <dt-bindings/interrupt-controller/arm-gic.h>
141 #include <dt-bindings/power/r8a7791-sysc.h>
142
143 qspi: spi@e6b10000 {
144 compatible = "renesas,qspi-r8a7791", "renesas,qspi";
145 reg = <0xe6b10000 0x2c>;
146 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
147 clocks = <&cpg CPG_MOD 917>;
148 dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
149 dma-names = "tx", "rx", "tx", "rx";
150 power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
151 resets = <&cpg 917>;
152 num-cs = <1>;
153 #address-cells = <1>;
154 #size-cells = <0>;
155 };
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