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-rw-r--r--arch/arm/plat-mxc/tzic.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
index c60a7e4..c219317 100644
--- a/arch/arm/plat-mxc/tzic.c
+++ b/arch/arm/plat-mxc/tzic.c
@@ -202,6 +202,10 @@ void __init tzic_init_irq(void __iomem *irqbase)
* tzic_enable_wake() - enable wakeup interrupt
*
* @return 0 if successful; non-zero otherwise
+ *
+ * This function provides an interrupt synchronization point that is required
+ * by tzic enabled platforms before entering imx specific low power modes (ie,
+ * those low power modes beyond the WAIT_CLOCKED basic ARM WFI only mode).
*/
int tzic_enable_wake(void)
{
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