SPI building for the dts file at91-ariag25.dts:
spi0: spi@f0000000 { status = "okay"; interrupts = <13 4 5>; cs-gpios = <&pioA 14 0>, <0>, <0>, <0>; device@0 { compatible = "spidev"; spi-max-frequency = <5000000>; reg = <0>; }; };
The following two modules used in this example come from the Quick2wire project: