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
7title: Renesas Serial Communication Interface with FIFO (SCIF)
8
9maintainers:
10  - Geert Uytterhoeven <geert+renesas@glider.be>
11
12allOf:
13  - $ref: serial.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - items:
19          - enum:
20              - renesas,scif-r7s72100     # RZ/A1H
21          - const: renesas,scif           # generic SCIF compatible UART
22
23      - items:
24          - enum:
25              - renesas,scif-r7s9210      # RZ/A2
26
27      - items:
28          - enum:
29              - renesas,scif-r8a7778      # R-Car M1
30              - renesas,scif-r8a7779      # R-Car H1
31          - const: renesas,rcar-gen1-scif # R-Car Gen1
32          - const: renesas,scif           # generic SCIF compatible UART
33
34      - items:
35          - enum:
36              - renesas,scif-r8a7742      # RZ/G1H
37              - renesas,scif-r8a7743      # RZ/G1M
38              - renesas,scif-r8a7744      # RZ/G1N
39              - renesas,scif-r8a7745      # RZ/G1E
40              - renesas,scif-r8a77470     # RZ/G1C
41              - renesas,scif-r8a7790      # R-Car H2
42              - renesas,scif-r8a7791      # R-Car M2-W
43              - renesas,scif-r8a7792      # R-Car V2H
44              - renesas,scif-r8a7793      # R-Car M2-N
45              - renesas,scif-r8a7794      # R-Car E2
46          - const: renesas,rcar-gen2-scif # R-Car Gen2 and RZ/G1
47          - const: renesas,scif           # generic SCIF compatible UART
48
49      - items:
50          - enum:
51              - renesas,scif-r8a774a1     # RZ/G2M
52              - renesas,scif-r8a774b1     # RZ/G2N
53              - renesas,scif-r8a774c0     # RZ/G2E
54              - renesas,scif-r8a774e1     # RZ/G2H
55              - renesas,scif-r8a7795      # R-Car H3
56              - renesas,scif-r8a7796      # R-Car M3-W
57              - renesas,scif-r8a77961     # R-Car M3-W+
58              - renesas,scif-r8a77965     # R-Car M3-N
59              - renesas,scif-r8a77970     # R-Car V3M
60              - renesas,scif-r8a77980     # R-Car V3H
61              - renesas,scif-r8a77990     # R-Car E3
62              - renesas,scif-r8a77995     # R-Car D3
63          - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
64          - const: renesas,scif           # generic SCIF compatible UART
65
66      - items:
67          - enum:
68              - renesas,scif-r8a779a0     # R-Car V3U
69              - renesas,scif-r8a779f0     # R-Car S4-8
70              - renesas,scif-r8a779g0     # R-Car V4H
71          - const: renesas,rcar-gen4-scif # R-Car Gen4
72          - const: renesas,scif           # generic SCIF compatible UART
73
74      - items:
75          - enum:
76              - renesas,scif-r9a07g044      # RZ/G2{L,LC}
77
78      - items:
79          - enum:
80              - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
81              - renesas,scif-r9a07g054      # RZ/V2L
82          - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
83
84  reg:
85    maxItems: 1
86
87  interrupts:
88    oneOf:
89      - items:
90          - description: A combined interrupt
91      - items:
92          - description: Error interrupt
93          - description: Receive buffer full interrupt
94          - description: Transmit buffer empty interrupt
95          - description: Break interrupt
96      - items:
97          - description: Error interrupt
98          - description: Receive buffer full interrupt
99          - description: Transmit buffer empty interrupt
100          - description: Break interrupt
101          - description: Data Ready interrupt
102          - description: Transmit End interrupt
103
104  interrupt-names:
105    oneOf:
106      - items:
107          - const: eri
108          - const: rxi
109          - const: txi
110          - const: bri
111      - items:
112          - const: eri
113          - const: rxi
114          - const: txi
115          - const: bri
116          - const: dri
117          - const: tei
118
119  clocks:
120    minItems: 1
121    maxItems: 4
122
123  clock-names:
124    minItems: 1
125    maxItems: 4
126    items:
127      enum:
128        - fck # UART functional clock
129        - sck # optional external clock input
130        - brg_int # optional internal clock source for BRG frequency divider
131        - scif_clk # optional external clock source for BRG frequency divider
132
133  power-domains:
134    maxItems: 1
135
136  resets:
137    maxItems: 1
138
139  dmas:
140    minItems: 2
141    maxItems: 4
142    description:
143      Must contain a list of pairs of references to DMA specifiers, one for
144      transmission, and one for reception.
145
146  dma-names:
147    minItems: 2
148    maxItems: 4
149    items:
150      enum:
151        - tx
152        - rx
153
154required:
155  - compatible
156  - reg
157  - interrupts
158  - clocks
159  - clock-names
160  - power-domains
161
162if:
163  properties:
164    compatible:
165      contains:
166        enum:
167          - renesas,rcar-gen2-scif
168          - renesas,rcar-gen3-scif
169          - renesas,rcar-gen4-scif
170          - renesas,scif-r9a07g044
171then:
172  required:
173    - resets
174
175unevaluatedProperties: false
176
177examples:
178  - |
179    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
180    #include <dt-bindings/interrupt-controller/arm-gic.h>
181    #include <dt-bindings/power/r8a7791-sysc.h>
182    aliases {
183        serial0 = &scif0;
184    };
185
186    scif0: serial@e6e60000 {
187        compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
188                     "renesas,scif";
189        reg = <0xe6e60000 64>;
190        interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
191        clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
192                 <&scif_clk>;
193        clock-names = "fck", "brg_int", "scif_clk";
194        dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
195        dma-names = "tx", "rx", "tx", "rx";
196        power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
197        resets = <&cpg 721>;
198    };
199