CONFIG_SERIAL_MUX: Serial MUX support

General informations

The Linux kernel configuration item CONFIG_SERIAL_MUX has multiple definitions:

Serial MUX support found in drivers/tty/serial/Kconfig

The configuration item CONFIG_SERIAL_MUX:

• prompt: Serial MUX support
• type: tristate
• depends on: CONFIG_GSC
• defined in drivers/tty/serial/Kconfig
• found in Linux kernels: 2.6.38–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.13, 6.14-rc+HEAD
• modules built: mux, mux

Help text

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

Serial MUX support found in drivers/serial/Kconfig

The configuration item CONFIG_SERIAL_MUX:

• prompt: Serial MUX support
• type: tristate
• depends on: CONFIG_GSC
• defined in drivers/serial/Kconfig
• found in Linux kernels: 2.5.48–2.5.75, 2.6.0–2.6.37
• modules built: mux, mux

Help text

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

Hardware

LKDDb

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, 6.0–6.13, 6.14-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, 6.0–6.13, 6.14-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, 6.0–6.13, 6.14-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, 6.0–6.13, 6.14-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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