CKCTRL
val = readl(priv->base + CKCTRL);
writel(val, priv->base + CKCTRL);
writel(val, priv->base + CKCTRL);
writel(val, priv->base + CKCTRL);
writel(val, priv->base + CKCTRL);
ret = readl_poll_timeout(priv->base + CKCTRL, val,
ret = readl_poll_timeout(priv->base + CKCTRL, val,
readl(priv->base + CKCTRL);