linux/Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt
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   1NVIDIA Tegra20/Tegra30 high speed (DMA based) UART controller driver.
   2
   3Required properties:
   4- compatible : should be "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart".
   5- reg: Should contain UART controller registers location and length.
   6- interrupts: Should contain UART controller interrupts.
   7- nvidia,dma-request-selector : The Tegra DMA controller's phandle and
   8  request selector for this UART controller.
   9
  10Optional properties:
  11- nvidia,enable-modem-interrupt: Enable modem interrupts. Should be enable
  12                only if all 8 lines of UART controller are pinmuxed.
  13
  14Example:
  15
  16serial@70006000 {
  17        compatible = "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart";
  18        reg = <0x70006000 0x40>;
  19        reg-shift = <2>;
  20        interrupts = <0 36 0x04>;
  21        nvidia,dma-request-selector = <&apbdma 8>;
  22        nvidia,enable-modem-interrupt;
  23        status = "disabled";
  24};
  25