Hi Mika, hi, 2015-08-26 11:13 GMT+02:00 Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>: > 4) The chip select needs to be active. > > It seems very likely that 1) is already taken care of, so I > probalby won't spend too much time worrying about that. It looks > like we are getting a valid GPIO for the reset (2) and LDOENA (3), > so it feels like those are probably ok. I guess this leaves the > SPI config as the next place to investigate, are there other > devices on the SPI that you can talk to that might at least > verify the SPI is working? Also might be worth trying to look at > how the chip selects are done perhaps that is not happening for > some reason? ok, that seems logical . And no I cannot prove or check other devices, I just learned a lot in the past three month about this (driver, spi, gpio, acpi, dsdt etc. ) at all. cheers chris -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html