xref: /openbmc/linux/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml (revision b1c3d2beed8ef3699fab106340e33a79052df116) 
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      - items:
36          - const: fsl,imxrt1050-lpuart
37          - const: fsl,imxrt1170-lpuart
38
39  reg:
40    maxItems: 1
41
42  interrupts:
43    maxItems: 1
44
45  clocks:
46    items:
47      - description: ipg clock
48      - description: baud clock
49    minItems: 1
50
51  clock-names:
52    items:
53      - const: ipg
54      - const: baud
55    minItems: 1
56
57  dmas:
58    items:
59      - description: DMA controller phandle and request line for RX
60      - description: DMA controller phandle and request line for TX
61
62  dma-names:
63    items:
64      - const: rx
65      - const: tx
66
67  rs485-rts-active-low: true
68  linux,rs485-enabled-at-boot-time: true
69
70required:
71  - compatible
72  - reg
73  - interrupts
74  - clocks
75  - clock-names
76
77unevaluatedProperties: false
78
79examples:
80  - |
81    #include <dt-bindings/clock/vf610-clock.h>
82
83    serial@40027000 {
84        compatible = "fsl,vf610-lpuart";
85        reg = <0x40027000 0x1000>;
86        interrupts = <0 61 0x00>;
87        clocks = <&clks VF610_CLK_UART0>;
88        clock-names = "ipg";
89        dmas = <&edma0 0 2>, <&edma0 0 3>;
90        dma-names = "rx","tx";
91    };
92