xref: /linux/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml (revision dec1c62e91ba268ab2a6e339d4d7a59287d5eba1) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/fsl-lpuart.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale low power universal asynchronous receiver/transmitter (lpuart)
8
9maintainers:
10  - Fugang Duan <fugang.duan@nxp.com>
11
12allOf:
13  - $ref: "rs485.yaml"
14
15properties:
16  compatible:
17    oneOf:
18      - enum:
19          - fsl,vf610-lpuart
20          - fsl,ls1021a-lpuart
21          - fsl,ls1028a-lpuart
22          - fsl,imx7ulp-lpuart
23          - fsl,imx8qxp-lpuart
24          - fsl,imxrt1050-lpuart
25      - items:
26          - enum:
27              - fsl,imx93-lpuart
28              - fsl,imx8ulp-lpuart
29          - const: fsl,imx7ulp-lpuart
30      - items:
31          - enum:
32              - fsl,imx8qm-lpuart
33              - fsl,imx8dxl-lpuart
34          - const: fsl,imx8qxp-lpuart
35
36  reg:
37    maxItems: 1
38
39  interrupts:
40    maxItems: 1
41
42  clocks:
43    items:
44      - description: ipg clock
45      - description: baud clock
46    minItems: 1
47
48  clock-names:
49    items:
50      - const: ipg
51      - const: baud
52    minItems: 1
53
54  dmas:
55    items:
56      - description: DMA controller phandle and request line for RX
57      - description: DMA controller phandle and request line for TX
58
59  dma-names:
60    items:
61      - const: rx
62      - const: tx
63
64  rs485-rts-active-low: true
65  linux,rs485-enabled-at-boot-time: true
66
67required:
68  - compatible
69  - reg
70  - interrupts
71  - clocks
72  - clock-names
73
74unevaluatedProperties: false
75
76examples:
77  - |
78    #include <dt-bindings/clock/vf610-clock.h>
79
80    serial@40027000 {
81        compatible = "fsl,vf610-lpuart";
82        reg = <0x40027000 0x1000>;
83        interrupts = <0 61 0x00>;
84        clocks = <&clks VF610_CLK_UART0>;
85        clock-names = "ipg";
86        dmas = <&edma0 0 2>, <&edma0 0 3>;
87        dma-names = "rx","tx";
88    };
89