RNG_v1_CTL_WAIT_SHIFT
(N2RNG_ACCUM_CYCLES_DEFAULT << RNG_v1_CTL_WAIT_SHIFT) |
((RNG_v1_SELFTEST_TICKS - 2) << RNG_v1_CTL_WAIT_SHIFT);
base = ((np->accum_cycles << RNG_v1_CTL_WAIT_SHIFT) |