1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/serial/renesas,scif.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Renesas Serial Communication Interface with FIFO (SCIF)
8
9 maintainers:
10 - Geert Uytterhoeven <geert+renesas@glider.be>
11
12 properties:
13 compatible:
14 oneOf:
15 - items:
16 - enum:
17 - renesas,scif-r7s72100 # RZ/A1H
18 - const: renesas,scif # generic SCIF compatible UART
19
20 - items:
21 - enum:
22 - renesas,scif-r7s9210 # RZ/A2
23
24 - items:
25 - enum:
26 - renesas,scif-r8a7778 # R-Car M1
27 - renesas,scif-r8a7779 # R-Car H1
28 - const: renesas,rcar-gen1-scif # R-Car Gen1
29 - const: renesas,scif # generic SCIF compatible UART
30
31 - items:
32 - enum:
33 - renesas,scif-r8a7742 # RZ/G1H
34 - renesas,scif-r8a7743 # RZ/G1M
35 - renesas,scif-r8a7744 # RZ/G1N
36 - renesas,scif-r8a7745 # RZ/G1E
37 - renesas,scif-r8a77470 # RZ/G1C
38 - renesas,scif-r8a7790 # R-Car H2
39 - renesas,scif-r8a7791 # R-Car M2-W
40 - renesas,scif-r8a7792 # R-Car V2H
41 - renesas,scif-r8a7793 # R-Car M2-N
42 - renesas,scif-r8a7794 # R-Car E2
43 - const: renesas,rcar-gen2-scif # R-Car Gen2 and RZ/G1
44 - const: renesas,scif # generic SCIF compatible UART
45
46 - items:
47 - enum:
48 - renesas,scif-r8a774a1 # RZ/G2M
49 - renesas,scif-r8a774a3 # RZ/G2M v3.0
50 - renesas,scif-r8a774b1 # RZ/G2N
51 - renesas,scif-r8a774c0 # RZ/G2E
52 - renesas,scif-r8a774e1 # RZ/G2H
53 - renesas,scif-r8a7795 # R-Car H3
54 - renesas,scif-r8a7796 # R-Car M3-W
55 - renesas,scif-r8a77961 # R-Car M3-W+
56 - renesas,scif-r8a77965 # R-Car M3-N
57 - renesas,scif-r8a77970 # R-Car V3M
58 - renesas,scif-r8a77980 # R-Car V3H
59 - renesas,scif-r8a77990 # R-Car E3
60 - renesas,scif-r8a77995 # R-Car D3
61 - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
62 - const: renesas,scif # generic SCIF compatible UART
63
64 - items:
65 - enum:
66 - renesas,scif-r8a779a0 # R-Car V3U
67 - renesas,scif-r8a779f0 # R-Car S4-8
68 - renesas,scif-r8a779g0 # R-Car V4H
69 - renesas,scif-r8a779h0 # R-Car V4M
70 - const: renesas,rcar-gen4-scif # R-Car Gen4
71 - const: renesas,scif # generic SCIF compatible UART
72
73 - items:
74 - enum:
75 - renesas,scif-r9a07g044 # RZ/G2{L,LC}
76
77 - items:
78 - enum:
79 - renesas,scif-r9a07g043 # RZ/G2UL and RZ/Five
80 - renesas,scif-r9a07g054 # RZ/V2L
81 - renesas,scif-r9a08g045 # RZ/G3S
82 - const: renesas,scif-r9a07g044 # RZ/G2{L,LC} fallback
83
84 - const: renesas,scif-r9a09g057 # RZ/V2H(P)
85
86 reg:
87 maxItems: 1
88
89 interrupts:
90 oneOf:
91 - items:
92 - description: A combined interrupt
93 - items:
94 - description: Error interrupt
95 - description: Receive buffer full interrupt
96 - description: Transmit buffer empty interrupt
97 - description: Break interrupt
98 - description: Data Ready interrupt
99 - description: Transmit End interrupt
100 - description: Transmit End/Data Ready interrupt
101 - description: Receive buffer full interrupt (EDGE trigger)
102 - description: Transmit buffer empty interrupt (EDGE trigger)
103 minItems: 4
104
105 interrupt-names:
106 minItems: 4
107 items:
108 - const: eri
109 - const: rxi
110 - const: txi
111 - const: bri
112 - const: dri
113 - const: tei
114 - const: tei-dri
115 - const: rxi-edge
116 - const: txi-edge
117
118 clocks:
119 minItems: 1
120 maxItems: 4
121
122 clock-names:
123 minItems: 1
124 maxItems: 4
125 items:
126 enum:
127 - fck # UART functional clock
128 - sck # optional external clock input
129 - brg_int # optional internal clock source for BRG frequency divider
130 - scif_clk # optional external clock source for BRG frequency divider
131
132 power-domains:
133 maxItems: 1
134
135 resets:
136 maxItems: 1
137
138 dmas:
139 minItems: 2
140 maxItems: 4
141 description:
142 Must contain a list of pairs of references to DMA specifiers, one for
143 transmission, and one for reception.
144
145 dma-names:
146 minItems: 2
147 maxItems: 4
148 items:
149 enum:
150 - tx
151 - rx
152
153 required:
154 - compatible
155 - reg
156 - interrupts
157 - clocks
158 - clock-names
159 - power-domains
160
161 allOf:
162 - $ref: serial.yaml#
163
164 - if:
165 properties:
166 compatible:
167 contains:
168 enum:
169 - renesas,rcar-gen2-scif
170 - renesas,rcar-gen3-scif
171 - renesas,rcar-gen4-scif
172 - renesas,scif-r9a07g044
173 - renesas,scif-r9a09g057
174 then:
175 required:
176 - resets
177
178 - if:
179 properties:
180 compatible:
181 contains:
182 enum:
183 - renesas,rcar-gen1-scif
184 - renesas,rcar-gen2-scif
185 - renesas,rcar-gen3-scif
186 - renesas,rcar-gen4-scif
187 then:
188 properties:
189 interrupts:
190 maxItems: 1
191
192 interrupt-names: false
193 else:
194 required:
195 - interrupt-names
196
197 - if:
198 properties:
199 compatible:
200 contains:
201 enum:
202 - renesas,scif-r7s72100
203 then:
204 properties:
205 interrupts:
206 minItems: 4
207 maxItems: 4
208
209 interrupt-names:
210 maxItems: 4
211
212 - if:
213 properties:
214 compatible:
215 contains:
216 enum:
217 - renesas,scif-r7s9210
218 - renesas,scif-r9a07g044
219 then:
220 properties:
221 interrupts:
222 minItems: 6
223 maxItems: 6
224
225 interrupt-names:
226 minItems: 6
227 maxItems: 6
228
229 - if:
230 properties:
231 compatible:
232 contains:
233 const: renesas,scif-r9a09g057
234 then:
235 properties:
236 clocks:
237 maxItems: 1
238
239 clock-names:
240 maxItems: 1
241
242 interrupts:
243 minItems: 9
244
245 interrupt-names:
246 minItems: 9
247
248 unevaluatedProperties: false
249
250 examples:
251 - |
252 #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
253 #include <dt-bindings/interrupt-controller/arm-gic.h>
254 #include <dt-bindings/power/r8a7791-sysc.h>
255 aliases {
256 serial0 = &scif0;
257 };
258
259 scif0: serial@e6e60000 {
260 compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
261 "renesas,scif";
262 reg = <0xe6e60000 64>;
263 interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
264 clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
265 <&scif_clk>;
266 clock-names = "fck", "brg_int", "scif_clk";
267 dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
268 dma-names = "tx", "rx", "tx", "rx";
269 power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
270 resets = <&cpg 721>;
271 };
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