Finally, I won't be able to use the spi driver spi-mt7621 since it is not a spi core but a serial flash core ... so I'm able 32 Bytes at once but not more. The last solution is to use a gpio-drived spi. One is provided, I'm able to create a device but I'm wondering how to connect the at86rf230 to the simulated spi? Before, I declared the at86rf230 in my dts under the spi bus. -- Baptiste -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html