TSU_SIER
writel(0, priv->base + TSU_SIER);
writel(0, priv->base + TSU_SIER);
writel(0, priv->base + TSU_SIER);
writel(TSU_SIER_CMPIE, priv->base + TSU_SIER);
writel(0, priv->base + TSU_SIER);