diff options
| author | Randy Dunlap <rdunlap@xenotime.net> | 2006-03-25 12:08:17 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 17:23:00 +0100 |
| commit | f1a1c2dc2a956c375b432d2a9a28e52ba9d81c7c (patch) | |
| tree | 39923914f3c5208c0948476ceff8f10617525f4e /Documentation | |
| parent | [PATCH] direct-io: bug fix in dio handling write error (diff) | |
| download | linux-f1a1c2dc2a956c375b432d2a9a28e52ba9d81c7c.tar.xz linux-f1a1c2dc2a956c375b432d2a9a28e52ba9d81c7c.zip | |
[PATCH] doc: more serial-console info
Add info on flow control for serial consoles. Refer to netconsole option
also.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 15 | ||||
| -rw-r--r-- | Documentation/serial-console.txt | 11 |
2 files changed, 18 insertions, 8 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 44a25f3f51d1..f8cb55c30b0f 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -367,12 +367,17 @@ running once the system is up. tty<n> Use the virtual console device <n>. ttyS<n>[,options] + ttyUSB0[,options] Use the specified serial port. The options are of - the form "bbbbpn", where "bbbb" is the baud rate, - "p" is parity ("n", "o", or "e"), and "n" is bits. - Default is "9600n8". - - See also Documentation/serial-console.txt. + the form "bbbbpnf", where "bbbb" is the baud rate, + "p" is parity ("n", "o", or "e"), "n" is number of + bits, and "f" is flow control ("r" for RTS or + omit it). Default is "9600n8". + + See Documentation/serial-console.txt for more + information. See + Documentation/networking/netconsole.txt for an + alternative. uart,io,<addr>[,options] uart,mmio,<addr>[,options] diff --git a/Documentation/serial-console.txt b/Documentation/serial-console.txt index 6c689b0df2b8..9a7bc8b3f479 100644 --- a/Documentation/serial-console.txt +++ b/Documentation/serial-console.txt @@ -17,11 +17,13 @@ The format of this option is: ttyX for any other virtual console ttySx for a serial port lp0 for the first parallel port + ttyUSB0 for the first USB serial device options: depend on the driver. For the serial port this - defines the baudrate/parity/bits of the port, - in the format BBBBPN, where BBBB is the speed, - P is parity (n/o/e), and N is bits. Default is + defines the baudrate/parity/bits/flow control of + the port, in the format BBBBPNF, where BBBB is the + speed, P is parity (n/o/e), N is number of bits, + and F is flow control ('r' for RTS). Default is 9600n8. The maximum baudrate is 115200. You can specify multiple console= options on the kernel command line. @@ -45,6 +47,9 @@ become the console. You will need to create a new device to use /dev/console. The official /dev/console is now character device 5,1. +(You can also use a network device as a console. See +Documentation/networking/netconsole.txt for information on that.) + Here's an example that will use /dev/ttyS1 (COM2) as the console. Replace the sample values as needed. |