Documentation/devicetree/bindings/spi/efm32-spi.txt

   1 * Energy Micro EFM32 SPI
   2
   3 Required properties:
   4 - #address-cells: see spi-bus.txt
   5 - #size-cells: see spi-bus.txt
   6 - compatible: should be "efm32,spi"
   7 - reg: Offset and length of the register set for the controller
   8 - interrupts: pair specifying rx and tx irq
   9 - clocks: phandle to the spi clock
  10 - cs-gpios: see spi-bus.txt
  11 - location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
  12
  13 Example:
  14
  15 spi1: spi@0x4000c400 { /* USART1 */
  16         #address-cells = <1>;
  17         #size-cells = <0>;
  18         compatible = "efm32,spi";
  19         reg = <0x4000c400 0x400>;
  20         interrupts = <15 16>;
  21         clocks = <&cmu 20>;
  22         cs-gpios = <&gpio 51 1>; // D3
  23         location = <1>;
  24         status = "ok";
  25
  26         ks8851@0 {
  27                 compatible = "ks8851";
  28                 spi-max-frequency = <6000000>;
  29                 reg = <0>;
  30                 interrupt-parent = <&boardfpga>;
  31                 interrupts = <4>;
  32                 status = "ok";
  33         };
  34 };