xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2*4882a593Smuzhiyun%YAML 1.2
3*4882a593Smuzhiyun---
4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/serial/fsl-lpuart.yaml#
5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml#
6*4882a593Smuzhiyun
7*4882a593Smuzhiyuntitle: Freescale low power universal asynchronous receiver/transmitter (lpuart)
8*4882a593Smuzhiyun
9*4882a593Smuzhiyunmaintainers:
10*4882a593Smuzhiyun  - Fugang Duan <fugang.duan@nxp.com>
11*4882a593Smuzhiyun
12*4882a593SmuzhiyunallOf:
13*4882a593Smuzhiyun  - $ref: "rs485.yaml"
14*4882a593Smuzhiyun
15*4882a593Smuzhiyunproperties:
16*4882a593Smuzhiyun  compatible:
17*4882a593Smuzhiyun    oneOf:
18*4882a593Smuzhiyun      - enum:
19*4882a593Smuzhiyun          - fsl,vf610-lpuart
20*4882a593Smuzhiyun          - fsl,ls1021a-lpuart
21*4882a593Smuzhiyun          - fsl,ls1028a-lpuart
22*4882a593Smuzhiyun          - fsl,imx7ulp-lpuart
23*4882a593Smuzhiyun          - fsl,imx8qm-lpuart
24*4882a593Smuzhiyun      - items:
25*4882a593Smuzhiyun          - const: fsl,imx8qxp-lpuart
26*4882a593Smuzhiyun          - const: fsl,imx7ulp-lpuart
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun  reg:
29*4882a593Smuzhiyun    maxItems: 1
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun  interrupts:
32*4882a593Smuzhiyun    maxItems: 1
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun  clocks:
35*4882a593Smuzhiyun    items:
36*4882a593Smuzhiyun      - description: ipg clock
37*4882a593Smuzhiyun      - description: baud clock
38*4882a593Smuzhiyun    minItems: 1
39*4882a593Smuzhiyun    maxItems: 2
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun  clock-names:
42*4882a593Smuzhiyun    items:
43*4882a593Smuzhiyun      - const: ipg
44*4882a593Smuzhiyun      - const: baud
45*4882a593Smuzhiyun    minItems: 1
46*4882a593Smuzhiyun    maxItems: 2
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun  dmas:
49*4882a593Smuzhiyun    items:
50*4882a593Smuzhiyun      - description: DMA controller phandle and request line for RX
51*4882a593Smuzhiyun      - description: DMA controller phandle and request line for TX
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun  dma-names:
54*4882a593Smuzhiyun    items:
55*4882a593Smuzhiyun      - const: rx
56*4882a593Smuzhiyun      - const: tx
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun  rs485-rts-active-low: true
59*4882a593Smuzhiyun  linux,rs485-enabled-at-boot-time: true
60*4882a593Smuzhiyun
61*4882a593Smuzhiyunrequired:
62*4882a593Smuzhiyun  - compatible
63*4882a593Smuzhiyun  - reg
64*4882a593Smuzhiyun  - interrupts
65*4882a593Smuzhiyun  - clocks
66*4882a593Smuzhiyun  - clock-names
67*4882a593Smuzhiyun
68*4882a593SmuzhiyununevaluatedProperties: false
69*4882a593Smuzhiyun
70*4882a593Smuzhiyunexamples:
71*4882a593Smuzhiyun  - |
72*4882a593Smuzhiyun    #include <dt-bindings/clock/vf610-clock.h>
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun    serial@40027000 {
75*4882a593Smuzhiyun        compatible = "fsl,vf610-lpuart";
76*4882a593Smuzhiyun        reg = <0x40027000 0x1000>;
77*4882a593Smuzhiyun        interrupts = <0 61 0x00>;
78*4882a593Smuzhiyun        clocks = <&clks VF610_CLK_UART0>;
79*4882a593Smuzhiyun        clock-names = "ipg";
80*4882a593Smuzhiyun        dmas = <&edma0 0 2>, <&edma0 0 3>;
81*4882a593Smuzhiyun        dma-names = "rx","tx";
82*4882a593Smuzhiyun    };
83