config NFC_CHIP_SUPPORT tristate "NFC driver solution - NFC Controller Driver" depends on I2C select NFC_ST54_SPI help STMicroelectronics ST21NFC Near Field Communication controller support. ST21NFC is standalone NFC and ST54 is combined with secure element. If configures to be y, means devices supports NFC functionality. If configures to be n, means devices doesn't support NFC functionality. config NFC_ST54_SPI tristate "NFC driver solution - SPI Controller Driver" depends on SPI && NFC_CHIP_SUPPORT help STMicroelectronics ST54 Secure Element controller SPI interface support. ST21NFC is standalone NFC and ST54 is combined with secure element. If configures to be y, means devices supports SPI interface to ST54. If configures to be n, means devices doesn't support SPI interface (eSE still usable). config MTK_NFC_CLKBUF_ENABLE bool "Enable clock buffer for NFC" help Enable clock buffer from PMIC for NFC. This configuration need to be set if support NFC functionality whether STMicroelectronics solution or not. If NFC solution is not STMicroelectronics, this configuration SHOULD be set.