Documentation/devicetree/bindings/spi/spi_atmel.txt

   1 Atmel SPI device
   2
   3 Required properties:
   4 - compatible : should be "atmel,at91rm9200-spi".
   5 - reg: Address and length of the register set for the device
   6 - interrupts: Should contain spi interrupt
   7 - cs-gpios: chipselects (optional for SPI controller version >= 2 with the
   8   Chip Select Active After Transfer feature).
   9 - clock-names: tuple listing input clock names.
  10         Required elements: "spi_clk"
  11 - clocks: phandles to input clocks.
  12
  13 Optional properties:
  14 - atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO
  15   capable SPI controllers.
  16
  17 Example:
  18
  19 spi1: spi@fffcc000 {
  20         compatible = "atmel,at91rm9200-spi";
  21         reg = <0xfffcc000 0x4000>;
  22         interrupts = <13 4 5>;
  23         #address-cells = <1>;
  24         #size-cells = <0>;
  25         clocks = <&spi1_clk>;
  26         clock-names = "spi_clk";
  27         cs-gpios = <&pioB 3 0>;
  28         atmel,fifo-size = <32>;
  29         status = "okay";
  30
  31         mmc-slot@0 {
  32                 compatible = "mmc-spi-slot";
  33                 reg = <0>;
  34                 gpios = <&pioC 4 0>;    /* CD */
  35                 spi-max-frequency = <25000000>;
  36         };
  37 };