xref: /linux/Documentation/devicetree/bindings/serial/renesas,sci.yaml (revision 3d0fe49454652117522f60bfbefb978ba0e5300b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/renesas,sci.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas Serial Communication Interface
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,r9a07g043-sci     # RZ/G2UL
21              - renesas,r9a07g044-sci     # RZ/G2{L,LC}
22              - renesas,r9a07g054-sci     # RZ/V2L
23          - const: renesas,sci            # generic SCI compatible UART
24
25      - items:
26          - const: renesas,sci            # generic SCI compatible UART
27
28  reg:
29    maxItems: 1
30
31  interrupts:
32    items:
33      - description: Error interrupt
34      - description: Receive buffer full interrupt
35      - description: Transmit buffer empty interrupt
36      - description: Transmit end interrupt
37
38  interrupt-names:
39    items:
40      - const: eri
41      - const: rxi
42      - const: txi
43      - const: tei
44
45  clocks:
46    minItems: 1
47    maxItems: 2
48
49  clock-names:
50    minItems: 1
51    maxItems: 2
52    items:
53      enum:
54        - fck # UART functional clock
55        - sck # optional external clock input
56
57  uart-has-rtscts: false
58
59required:
60  - compatible
61  - reg
62  - interrupts
63  - clocks
64  - clock-names
65
66if:
67  properties:
68    compatible:
69      contains:
70        enum:
71          - renesas,r9a07g043-sci
72          - renesas,r9a07g044-sci
73          - renesas,r9a07g054-sci
74then:
75  properties:
76    resets:
77      maxItems: 1
78
79    power-domains:
80      maxItems: 1
81
82  required:
83    - resets
84    - power-domains
85
86unevaluatedProperties: false
87
88examples:
89  - |
90    #include <dt-bindings/clock/r9a07g044-cpg.h>
91    #include <dt-bindings/interrupt-controller/arm-gic.h>
92
93    aliases {
94        serial0 = &sci0;
95    };
96
97    sci0: serial@1004d000 {
98        compatible = "renesas,r9a07g044-sci", "renesas,sci";
99        reg = <0x1004d000 0x400>;
100        interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
101                     <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
102                     <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
103                     <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
104        interrupt-names = "eri", "rxi", "txi", "tei";
105        clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
106        clock-names = "fck";
107        power-domains = <&cpg>;
108        resets = <&cpg R9A07G044_SCI0_RST>;
109    };
110