config NFC_HCI depends on NFC tristate "NFC HCI implementation" default n help Say Y here if you want to build support for a kernel NFC HCI implementation. This is mostly needed for devices that only process HCI frames, like for example the NXP pn544. config NFC_SHDLC depends on NFC_HCI select CRC_CCITT bool "SHDLC link layer for HCI based NFC drivers" default n ---help--- Say yes if you use an NFC HCI driver that requires SHDLC link layer. If unsure, say N here.