1 files changed, 11 insertions, 3 deletions

diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index 079cb3df62cf..41c8378c0b2f 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -97,15 +97,23 @@
 
         struct serial_rs485 rs485conf;
 
-        /* Set RS485 mode: */
+        /* Enable RS485 mode: */
         rs485conf.flags |= SER_RS485_ENABLED;
 
+        /* Set logical level for RTS pin equal to 1 when sending: */
+        rs485conf.flags |= SER_RS485_RTS_ON_SEND;
+        /* or, set logical level for RTS pin equal to 0 when sending: */
+        rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND);
+
+        /* Set logical level for RTS pin equal to 1 after sending: */
+        rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
+        /* or, set logical level for RTS pin equal to 0 after sending: */
+        rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND);
+
         /* Set rts delay before send, if needed: */
-        rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND;
         rs485conf.delay_rts_before_send = ...;
 
         /* Set rts delay after send, if needed: */
-        rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
         rs485conf.delay_rts_after_send = ...;
 
         /* Set this flag if you want to receive data even whilst sending data */