RNG_CTRL           17 drivers/char/hw_random/bcm2835-rng.c #define RNG_CTRL	0x0
RNG_CTRL           16 drivers/char/hw_random/hisi-rng.c #define RNG_CTRL	0x4
RNG_CTRL           27 drivers/char/hw_random/mtk-rng.c #define RNG_CTRL			0x00