diff --git a/drivers/mfd/hi655x-pmic.c b/drivers/mfd/hi655x-pmic.c
index 05ddc78823622..68ab3701cbf38 100644
--- a/drivers/mfd/hi655x-pmic.c
+++ b/drivers/mfd/hi655x-pmic.c
@@ -45,6 +45,7 @@ static const struct regmap_irq_chip hi655x_irq_chip = {
 	.num_regs = 1,
 	.num_irqs = ARRAY_SIZE(hi655x_irqs),
 	.status_base = HI655X_IRQ_STAT_BASE,
+	.ack_base = HI655X_IRQ_STAT_BASE,
 	.mask_base = HI655X_IRQ_MASK_BASE,
 };