# TI CC13xx / CC26xx entropy driver configuration # Copyright (c) 2019 Brett Witherspoon # SPDX-License-Identifier: Apache-2.0 config ENTROPY_CC13XX_CC26XX_RNG bool "TI SimpleLink CC13xx / CC26xx True Random Number Generator (TRNG)" depends on SOC_SERIES_CC13X2_CC26X2 select ENTROPY_HAS_DRIVER select RING_BUFFER help This option enables the driver for the True Random Number Generator (TRNG) for TI SimpleLink CC13xx / CC26xx SoCs. if ENTROPY_CC13XX_CC26XX_RNG config ENTROPY_CC13XX_CC26XX_POOL_SIZE int "Number of bytes in the entropy pool" default 512 help The size in bytes of the buffer used to store entropy generated by the hardware. Should be a power of two for high performance. config ENTROPY_CC13XX_CC26XX_SAMPLES_PER_CYCLE int "Number of samples to generate entropy" range 256 16777216 default 240000 help The number of samples used to generate entropy. The time required to generate 64 bits of entropy is determined by the number of FROs enabled, the sampling (system) clock frequency, and this value. config ENTROPY_CC13XX_CC26XX_ALARM_THRESHOLD int "Threshold for detected repeated patterns" range 0 255 default 255 help The number of samples detected with repeating patterns before an alarm event is triggered. The associated FRO is automatically shut down. config ENTROPY_CC13XX_CC26XX_SHUTDOWN_THRESHOLD int "Threshold for the number of FROs automatically shut down" range 0 24 default 0 help The number of FROs allowed to be shutdown before the driver attempts to take corrective action. endif # ENTROPY_CC13XX_CC26XX_RNG