STARFIVE_ISTAT
u32 data = readl(trng->base + STARFIVE_ISTAT);
writel(data, trng->base + STARFIVE_ISTAT);
status = readl(trng->base + STARFIVE_ISTAT);
writel(STARFIVE_ISTAT_RAND_RDY, trng->base + STARFIVE_ISTAT);
writel(STARFIVE_ISTAT_SEED_DONE, trng->base + STARFIVE_ISTAT);
writel(STARFIVE_ISTAT_LFSR_LOCKUP, trng->base + STARFIVE_ISTAT);