arm: imx6: defconfig: update tx6 defconfigs

[karo-tx-linux.git] / Documentation / serial / serial-rs485.txt

diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index 079cb3df62cf6ff9908bebe493344d1cfdd99846..41c8378c0b2fb9ee86d3a781e8aaff6cad33ff9a 100644 (file)
--- 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 */