Documentation/devicetree/bindings/serial/pl011.txt

   1 * ARM AMBA Primecell PL011 serial UART
   2
   3 Required properties:
   4 - compatible: must be "arm,primecell", "arm,pl011"
   5 - reg: exactly one register range with length 0x1000
   6 - interrupts: exactly one interrupt specifier
   7
   8 Optional properties:
   9 - pinctrl: When present, must have one state named "default",
  10            and may contain a second name named "sleep". The former
  11            state sets up pins for ordinary operation whereas
  12            the latter state will put the associated pins to sleep
  13            when the UART is unused
  14 - clocks:  When present, the first clock listed must correspond to
  15            the clock named UARTCLK on the IP block, i.e. the clock
  16            to the external serial line, whereas the second clock
  17            must correspond to the PCLK clocking the internal logic
  18            of the block. Just listing one clock (the first one) is
  19            deprecated.
  20 - clocks-names: When present, the first clock listed must be named
  21            "uartclk" and the second clock listed must be named
  22            "apb_pclk"
  23 - dmas:    When present, may have one or two dma channels.
  24            The first one must be named "rx", the second one
  25            must be named "tx".
  26
  27 See also bindings/arm/primecell.txt
  28
  29 Example:
  30
  31 uart@80120000 {
  32         compatible = "arm,pl011", "arm,primecell";
  33         reg = <0x80120000 0x1000>;
  34         interrupts = <0 11 IRQ_TYPE_LEVEL_HIGH>;
  35         dmas = <&dma 13 0 0x2>, <&dma 13 0 0x0>;
  36         dma-names = "rx", "tx";
  37         clocks = <&foo_clk>, <&bar_clk>;
  38         clock-names = "uartclk", "apb_pclk";
  39 };