xref: /linux/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml (revision 0ea5c948cb64bab5bc7a5516774eb8536f05aa0d) 
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
41required:
42  - compatible
43  - reg
44  - interrupts
45  - clocks
46  - clock-names
47
48allOf:
49  - $ref: serial.yaml#
50
51  - if:
52      properties:
53        compatible:
54          contains:
55            const: renesas,r9a09g011-uart
56    then:
57      properties:
58        clocks:
59          minItems: 2
60        clock-names:
61          minItems: 2
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