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