diff --git a/drivers/irqchip/irq-mmp.c b/drivers/irqchip/irq-mmp.c
index 013fc9659a84..25f32e1d7764 100644
--- a/drivers/irqchip/irq-mmp.c
+++ b/drivers/irqchip/irq-mmp.c
@@ -181,13 +181,13 @@ const struct irq_domain_ops mmp_irq_domain_ops = {
 	.xlate		= mmp_irq_domain_xlate,
 };
 
-static struct mmp_intc_conf mmp_conf = {
+static const struct mmp_intc_conf mmp_conf = {
 	.conf_enable	= 0x51,
 	.conf_disable	= 0x0,
 	.conf_mask	= 0x7f,
 };
 
-static struct mmp_intc_conf mmp2_conf = {
+static const struct mmp_intc_conf mmp2_conf = {
 	.conf_enable	= 0x20,
 	.conf_disable	= 0x0,
 	.conf_mask	= 0x7f,