BCH_BHINT
writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);
ret = readl_relaxed_poll_timeout(bch->base + BCH_BHINT, reg,
writel(reg, bch->base + BCH_BHINT);
writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);
ret = readl_poll_timeout(bch->base + BCH_BHINT, reg,
writel(reg, bch->base + BCH_BHINT);
writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);
writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);