1 files changed, 4 insertions, 3 deletions

diff --git a/include/asm-avr32/arch-at32ap/portmux.h b/include/asm-avr32/arch-at32ap/portmux.h
index 83c690571322..2ba611e0e134 100644
--- a/include/asm-avr32/arch-at32ap/portmux.h
+++ b/include/asm-avr32/arch-at32ap/portmux.h
@@ -15,9 +15,10 @@
  *
  * The following flags determine the initial state of the pin.
  */
-#define AT32_GPIOF_PULLUP       0x00000001      /* Enable pull-up */
-#define AT32_GPIOF_OUTPUT       0x00000002      /* Enable output driver */
-#define AT32_GPIOF_HIGH         0x00000004      /* Set output high */
+#define AT32_GPIOF_PULLUP       0x00000001      /* (not-OUT) Enable pull-up */
+#define AT32_GPIOF_OUTPUT       0x00000002      /* (OUT) Enable output driver */
+#define AT32_GPIOF_HIGH         0x00000004      /* (OUT) Set output high */
+#define AT32_GPIOF_DEGLITCH     0x00000008      /* (IN) Filter glitches */
 
 void at32_select_periph(unsigned int pin, unsigned int periph,
                         unsigned long flags);