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The Linux kernel configuration item CONFIG_SERIAL_MUX
has multiple definitions:
drivers/tty/serial/Kconfig
The configuration item CONFIG_SERIAL_MUX:
CONFIG_GSC
mux
, mux
Saying Y here will enable the hardware MUX serial driver for the Nova, K class systems and D class with a 'remote control card'. The hardware MUX is not 8250/16550 compatible therefore the /dev/ttyB0 device is shared between the Serial MUX and the PDC software console. The following steps need to be completed to use the Serial MUX:
1. create the device entry (mknod /dev/ttyB0 c 11 0) 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0 3. Add device ttyB0 to /etc/securetty (if you want to log on as root on this console.) 4. Change the kernel command console parameter to: console=ttyB0
drivers/serial/Kconfig
The configuration item CONFIG_SERIAL_MUX:
CONFIG_GSC
mux
, mux
Saying Y here will enable the hardware MUX serial driver for the Nova, K class systems and D class with a 'remote control card'. The hardware MUX is not 8250/16550 compatible therefore the /dev/ttyB0 device is shared between the Serial MUX and the PDC software console. The following steps need to be completed to use the Serial MUX:
1. create the device entry (mknod /dev/ttyB0 c 11 0) 2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0 3. Add device ttyB0 to /etc/securetty (if you want to log on as root on this console.) 4. Change the kernel command console parameter to: console=ttyB0
Raw data from LKDDb:
lkddb module mux CONFIG_SERIAL_MUX : drivers/serial/Kconfig : "Serial MUX support" # in 2.5.48–2.5.75, 2.6.0–2.6.37
lkddb module mux CONFIG_SERIAL_MUX : drivers/tty/serial/Kconfig : "Serial MUX support" # in 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
lkddb parisc .. .. .... 0000000d : CONFIG_SERIAL_MUX : drivers/serial/mux.c # in 2.5.48–2.5.75, 2.6.0–2.6.37
lkddb parisc .. .. .... 0000000d : CONFIG_SERIAL_MUX : drivers/tty/serial/mux.c # in 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
lkddb parisc .. .. 0015 0000000d : CONFIG_SERIAL_MUX : drivers/serial/mux.c # in 2.6.21–2.6.37
lkddb parisc .. .. 0015 0000000d : CONFIG_SERIAL_MUX : drivers/tty/serial/mux.c # in 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
lkddb parisc .. .. 0044 0000000d : CONFIG_SERIAL_MUX : drivers/serial/mux.c # in 2.6.21–2.6.37
lkddb parisc .. .. 0044 0000000d : CONFIG_SERIAL_MUX : drivers/tty/serial/mux.c # in 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
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