But we need CONFIG_NFC_PN544_I2C (which is hidden behind CONFIG_NFC), not CONFIG_NFC_PN547. I don't even know what CONFIG_NFC_PN547 is for (linux kernel driver database doesn't know that, too). Did I say this is weird? ^^ //EDIT: While CONFIG_NFC_PN544_I2C is a tristate, too, http://releases.sailfishos.org/sources/ lags behind for months so no way to compile anything.