diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index e88fe9593a65..8e0ff1be07ec 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -519,6 +519,8 @@ static int rockchip_pmu_domain_mem_reset(struct rockchip_pm_domain *pd)
 		goto error;
 	}
 
+	udelay(20);
+
 	regmap_write(pmu->regmap, pmu->info->mem_pwr_offset + pd->info->pwr_offset,
 		     (pd->info->pwr_mask | pd->info->pwr_w_mask));
 	dsb(sy);