Documentation/devicetree/bindings/serial/fsl-lpuart.yaml

   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
   7 title: Freescale low power universal asynchronous receiver/transmitter (lpuart)
   8
   9 maintainers:
  10   - Fugang Duan <fugang.duan@nxp.com>
  11
  12 allOf:
  13   - $ref: "rs485.yaml"
  14
  15 properties:
  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           - const: fsl,imx8ulp-lpuart
  27           - const: fsl,imx7ulp-lpuart
  28       - items:
  29           - enum:
  30               - fsl,imx8qm-lpuart
  31               - fsl,imx8dxl-lpuart
  32           - const: fsl,imx8qxp-lpuart
  33
  34   reg:
  35     maxItems: 1
  36
  37   interrupts:
  38     maxItems: 1
  39
  40   clocks:
  41     items:
  42       - description: ipg clock
  43       - description: baud clock
  44     minItems: 1
  45
  46   clock-names:
  47     items:
  48       - const: ipg
  49       - const: baud
  50     minItems: 1
  51
  52   dmas:
  53     items:
  54       - description: DMA controller phandle and request line for RX
  55       - description: DMA controller phandle and request line for TX
  56
  57   dma-names:
  58     items:
  59       - const: rx
  60       - const: tx
  61
  62   rs485-rts-active-low: true
  63   linux,rs485-enabled-at-boot-time: true
  64
  65 required:
  66   - compatible
  67   - reg
  68   - interrupts
  69   - clocks
  70   - clock-names
  71
  72 unevaluatedProperties: false
  73
  74 examples:
  75   - |
  76     #include <dt-bindings/clock/vf610-clock.h>
  77
  78     serial@40027000 {
  79         compatible = "fsl,vf610-lpuart";
  80         reg = <0x40027000 0x1000>;
  81         interrupts = <0 61 0x00>;
  82         clocks = <&clks VF610_CLK_UART0>;
  83         clock-names = "ipg";
  84         dmas = <&edma0 0 2>, <&edma0 0 3>;
  85         dma-names = "rx","tx";
  86     };