xref: /freebsd/sys/contrib/device-tree/Bindings/serial/renesas,em-uart.yaml (revision d5b0e70f7e04d971691517ce1304d86a1e367e2e) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: "http://devicetree.org/schemas/serial/renesas,em-uart.yaml#"
5$schema: "http://devicetree.org/meta-schemas/core.yaml#"
6
7title: Renesas EMMA Mobile UART Interface
8
9maintainers:
10  - Magnus Damm <magnus.damm@gmail.com>
11
12properties:
13  compatible:
14    oneOf:
15      - items:
16          - enum:
17              - renesas,r9a09g011-uart    # RZ/V2M
18          - const: renesas,em-uart        # generic EMMA Mobile compatible UART
19
20      - items:
21          - const: renesas,em-uart        # generic EMMA Mobile compatible UART
22
23  reg:
24    maxItems: 1
25
26  interrupts:
27    maxItems: 1
28
29  clocks:
30    minItems: 1
31    items:
32      - description: UART functional clock
33      - description: Internal clock to access the registers
34
35  clock-names:
36    minItems: 1
37    items:
38      - const: sclk
39      - const: pclk
40
41allOf:
42  - $ref: serial.yaml#
43
44  - if:
45      properties:
46        compatible:
47          contains:
48            const: renesas,r9a09g011-uart
49    then:
50      properties:
51        clocks:
52          minItems: 2
53        clock-names:
54          minItems: 2
55
56required:
57  - compatible
58  - reg
59  - interrupts
60  - clocks
61  - clock-names
62
63unevaluatedProperties: false
64
65examples:
66  - |
67    #include <dt-bindings/interrupt-controller/arm-gic.h>
68    uart0: serial@e1020000 {
69            compatible = "renesas,em-uart";
70            reg = <0xe1020000 0x38>;
71            interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
72            clocks = <&usia_u0_sclk>;
73            clock-names = "sclk";
74    };
75