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,imx8qm-lpuart
  24       - items:
  25           - const: fsl,imx8qxp-lpuart
  26           - const: fsl,imx7ulp-lpuart
  27
  28   reg:
  29     maxItems: 1
  30
  31   interrupts:
  32     maxItems: 1
  33
  34   clocks:
  35     items:
  36       - description: ipg clock
  37       - description: baud clock
  38     minItems: 1
  39
  40   clock-names:
  41     items:
  42       - const: ipg
  43       - const: baud
  44     minItems: 1
  45
  46   dmas:
  47     items:
  48       - description: DMA controller phandle and request line for RX
  49       - description: DMA controller phandle and request line for TX
  50
  51   dma-names:
  52     items:
  53       - const: rx
  54       - const: tx
  55
  56   rs485-rts-active-low: true
  57   linux,rs485-enabled-at-boot-time: true
  58
  59 required:
  60   - compatible
  61   - reg
  62   - interrupts
  63   - clocks
  64   - clock-names
  65
  66 unevaluatedProperties: false
  67
  68 examples:
  69   - |
  70     #include <dt-bindings/clock/vf610-clock.h>
  71
  72     serial@40027000 {
  73         compatible = "fsl,vf610-lpuart";
  74         reg = <0x40027000 0x1000>;
  75         interrupts = <0 61 0x00>;
  76         clocks = <&clks VF610_CLK_UART0>;
  77         clock-names = "ipg";
  78         dmas = <&edma0 0 2>, <&edma0 0 3>;
  79         dma-names = "rx","tx";
  80     };