linux/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt
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   1NVIDIA Tegra114 SPI controller.
   2
   3Required properties:
   4- compatible : should be "nvidia,tegra114-spi".
   5- reg: Should contain SPI registers location and length.
   6- interrupts: Should contain SPI interrupts.
   7- nvidia,dma-request-selector : The Tegra DMA controller's phandle and
   8  request selector for this SPI controller.
   9- This is also require clock named "spi" as per binding document
  10  Documentation/devicetree/bindings/clock/clock-bindings.txt
  11
  12Recommended properties:
  13- spi-max-frequency: Definition as per
  14                     Documentation/devicetree/bindings/spi/spi-bus.txt
  15Example:
  16
  17spi@7000d600 {
  18        compatible = "nvidia,tegra114-spi";
  19        reg = <0x7000d600 0x200>;
  20        interrupts = <0 82 0x04>;
  21        nvidia,dma-request-selector = <&apbdma 16>;
  22        spi-max-frequency = <25000000>;
  23        #address-cells = <1>;
  24        #size-cells = <0>;
  25        status = "disabled";
  26};
  27