net: macb: add description for SRTSM

Add description for SRTSM bit.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index d8d8721..d1e0e11 100644 (file)
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -243,7 +243,7 @@
 #define MACB_NCR_TPF_SIZE      1
 #define MACB_TZQ_OFFSET                12 /* Transmit zero quantum pause frame */
 #define MACB_TZQ_SIZE          1
-#define MACB_SRTSM_OFFSET      15
+#define MACB_SRTSM_OFFSET      15 /* Store Receive Timestamp to Memory */
 #define MACB_OSSMODE_OFFSET 24 /* Enable One Step Synchro Mode */
 #define MACB_OSSMODE_SIZE      1