doc/device-tree-bindings/spi/spi-atcspi200.txt

   1 Andestech ATCSPI200 SPI controller Device Tree Bindings
   2 -------------------------------------------------------
   3 ATCSPI200 is a Serial Peripheral Interface (SPI) controller
   4 which serves as a SPI master or a SPI slave.
   5
   6 It is often be embedded in AE3XX and AE250 platforms.
   7
   8 Required properties:
   9 - compatible: has to be "andestech,atcspi200".
  10 - reg: Base address and size of the controllers memory area.
  11 - #address-cells: <1>, as required by generic SPI binding.
  12 - #size-cells: <0>, also as required by generic SPI binding.
  13 - interrupts: Property with a value describing the interrupt number.
  14 - clocks: Clock phandles (see clock bindings for details).
  15 - spi-max-frequency: Maximum SPI clocking speed of device in Hz.
  16
  17 Optional properties:
  18 - num-cs: Number of chip selects used.
  19
  20 Example:
  21
  22         spi: spi@f0b00000 {
  23                 compatible = "andestech,atcspi200";
  24                 reg = <0xf0b00000 0x1000>;
  25                 #address-cells = <1>;
  26                 #size-cells = <0>;
  27                 num-cs = <1>;
  28                 clocks = <&spiclk>;
  29                 interrupts = <3 4>;
  30                 flash@0 {
  31                         compatible = "spi-flash";
  32                         spi-max-frequency = <50000000>;
  33                         reg = <0>;
  34                         spi-cpol;
  35                         spi-cpha;
  36                 };
  37         };