diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index e9470a9db16..0f813784849 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -985,12 +985,13 @@ static void __init prcm_setup_regs(void)
 	prm_write_mod_reg(OMAP3430_EN_GPIO2 | OMAP3430_EN_GPIO3 |
 			  OMAP3430_EN_GPIO4 | OMAP3430_EN_GPIO5 |
 			  OMAP3430_EN_GPIO6 | OMAP3430_EN_UART3 |
-			  OMAP3430_EN_MCBSP2 , OMAP3430_PER_MOD, PM_WKEN);
+			  OMAP3430_EN_MCBSP2 |  OMAP3430_EN_MCBSP3,
+			  OMAP3430_PER_MOD, PM_WKEN);
 	/* and allow them to wake up MPU */
 	prm_write_mod_reg(OMAP3430_GRPSEL_GPIO2 | OMAP3430_EN_GPIO3 |
 			  OMAP3430_GRPSEL_GPIO4 | OMAP3430_EN_GPIO5 |
 			  OMAP3430_GRPSEL_GPIO6 | OMAP3430_EN_UART3 |
-			  OMAP3430_EN_MCBSP2,
+			  OMAP3430_EN_MCBSP2 | OMAP3430_EN_MCBSP3,
 			  OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
 
 	/* Don't attach IVA interrupts */