xref: /freebsd/sys/contrib/device-tree/Bindings/serial/renesas,scif.yaml (revision c7046f76c2c027b00c0e6ba57cfd28f1a78f5e23) 
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              - renesas,scif-r8a779a0     # R-Car V3U
64          - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
65          - const: renesas,scif           # generic SCIF compatible UART
66
67      - items:
68          - enum:
69              - renesas,scif-r8a779f0     # R-Car S4-8
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
80              - renesas,scif-r9a07g054      # RZ/V2L
81          - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
82
83  reg:
84    maxItems: 1
85
86  interrupts:
87    oneOf:
88      - items:
89          - description: A combined interrupt
90      - items:
91          - description: Error interrupt
92          - description: Receive buffer full interrupt
93          - description: Transmit buffer empty interrupt
94          - description: Transmit End interrupt
95      - items:
96          - description: Error interrupt
97          - description: Receive buffer full interrupt
98          - description: Transmit buffer empty interrupt
99          - description: Break interrupt
100          - description: Data Ready interrupt
101          - description: Transmit End interrupt
102
103  interrupt-names:
104    oneOf:
105      - items:
106          - const: eri
107          - const: rxi
108          - const: txi
109          - const: tei
110      - items:
111          - const: eri
112          - const: rxi
113          - const: txi
114          - const: bri
115          - const: dri
116          - const: tei
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
153required:
154  - compatible
155  - reg
156  - interrupts
157  - clocks
158  - clock-names
159  - power-domains
160
161if:
162  properties:
163    compatible:
164      contains:
165        enum:
166          - renesas,rcar-gen2-scif
167          - renesas,rcar-gen3-scif
168          - renesas,rcar-gen4-scif
169          - renesas,scif-r9a07g044
170then:
171  required:
172    - resets
173
174unevaluatedProperties: false
175
176examples:
177  - |
178    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
179    #include <dt-bindings/interrupt-controller/arm-gic.h>
180    #include <dt-bindings/power/r8a7791-sysc.h>
181    aliases {
182            serial0 = &scif0;
183    };
184
185    scif0: serial@e6e60000 {
186            compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
187                         "renesas,scif";
188            reg = <0xe6e60000 64>;
189            interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
190            clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
191                     <&scif_clk>;
192            clock-names = "fck", "brg_int", "scif_clk";
193            dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
194            dma-names = "tx", "rx", "tx", "rx";
195            power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
196            resets = <&cpg 721>;
197    };
198