[ARM] 3975/1: AT91: Comments in atmel_serial.h

Updated some of the comments in the atmel_serial.h header detailing
which bits are only available on the AT91RM9200 or the AT91SAM9xx
processors.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/serial/atmel_serial.h b/drivers/serial/atmel_serial.h
index eced2ad1a8d9..fe1763b2a6d5 100644
--- a/drivers/serial/atmel_serial.h
+++ b/drivers/serial/atmel_serial.h
@@ -31,8 +31,8 @@
 #define         ATMEL_US_RSTIT          (1 << 13)               /* Reset Iterations */
 #define         ATMEL_US_RSTNACK        (1 << 14)               /* Reset Non Acknowledge */
 #define         ATMEL_US_RETTO          (1 << 15)               /* Rearm Time-out */
-#define         ATMEL_US_DTREN          (1 << 16)               /* Data Terminal Ready Enable */
-#define         ATMEL_US_DTRDIS         (1 << 17)               /* Data Terminal Ready Disable */
+#define         ATMEL_US_DTREN          (1 << 16)               /* Data Terminal Ready Enable [AT91RM9200 only] */
+#define         ATMEL_US_DTRDIS         (1 << 17)               /* Data Terminal Ready Disable [AT91RM9200 only] */
 #define         ATMEL_US_RTSEN          (1 << 18)               /* Request To Send Enable */
 #define         ATMEL_US_RTSDIS         (1 << 19)               /* Request To Send Disable */
 
@@ -92,9 +92,9 @@
 #define         ATMEL_US_TXBUFE         (1 << 11)               /* Transmission Buffer Empty */
 #define         ATMEL_US_RXBUFF         (1 << 12)               /* Reception Buffer Full */
 #define         ATMEL_US_NACK           (1 << 13)               /* Non Acknowledge */
-#define         ATMEL_US_RIIC           (1 << 16)               /* Ring Indicator Input Change */
-#define         ATMEL_US_DSRIC          (1 << 17)               /* Data Set Ready Input Change */
-#define         ATMEL_US_DCDIC          (1 << 18)               /* Data Carrier Detect Input Change */
+#define         ATMEL_US_RIIC           (1 << 16)               /* Ring Indicator Input Change [AT91RM9200 only] */
+#define         ATMEL_US_DSRIC          (1 << 17)               /* Data Set Ready Input Change [AT91RM9200 only] */
+#define         ATMEL_US_DCDIC          (1 << 18)               /* Data Carrier Detect Input Change [AT91RM9200 only] */
 #define         ATMEL_US_CTSIC          (1 << 19)               /* Clear to Send Input Change */
 #define         ATMEL_US_RI             (1 << 20)               /* RI */
 #define         ATMEL_US_DSR            (1 << 21)               /* DSR */
@@ -106,6 +106,7 @@
 #define ATMEL_US_CSR            0x14                    /* Channel Status Register */
 #define ATMEL_US_RHR            0x18                    /* Receiver Holding Register */
 #define ATMEL_US_THR            0x1c                    /* Transmitter Holding Register */
+#define         ATMEL_US_SYNH           (1 << 15)               /* Transmit/Receive Sync [SAM9 only] */
 
 #define ATMEL_US_BRGR           0x20                    /* Baud Rate Generator Register */
 #define         ATMEL_US_CD             (0xffff << 0)           /* Clock Divider */