diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index 2458be6fc67b..e0088e0508f8 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -17,6 +17,7 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/of_irq.h>
 
 #include "soc.h"
 #include "common.h"
@@ -649,6 +650,11 @@ int __init omap3xxx_prm_init(void)
 	return prm_register(&omap3xxx_prm_ll_data);
 }
 
+static struct of_device_id omap3_prm_dt_match_table[] = {
+	{ .compatible = "ti,omap3-prm" },
+	{ }
+};
+
 static int omap3xxx_prm_late_init(void)
 {
 	int ret;
@@ -656,6 +662,18 @@ static int omap3xxx_prm_late_init(void)
 	if (!(prm_features & PRM_HAS_IO_WAKEUP))
 		return 0;
 
+	if (of_have_populated_dt()) {
+		struct device_node *np;
+		int irq_num;
+
+		np = of_find_matching_node(NULL, omap3_prm_dt_match_table);
+		if (np) {
+			irq_num = of_irq_get(np, 0);
+			if (irq_num >= 0)
+				omap3_prcm_irq_setup.irq = irq_num;
+		}
+	}
+
 	omap3xxx_prm_enable_io_wakeup();
 	ret = omap_prcm_register_chain_handler(&omap3_prcm_irq_setup);
 	if (!ret)