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Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 500cfa776225..27ec49af1bf2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -788,25 +788,6 @@ Documentation/networking/netconsole.rst for an alternative. - <DEVNAME>:<n>.<n>[,options] - Use the specified serial port on the serial core bus. - The addressing uses DEVNAME of the physical serial port - device, followed by the serial core controller instance, - and the serial port instance. The options are the same - as documented for the ttyS addressing above. - - The mapping of the serial ports to the tty instances - can be viewed with: - - $ ls -d /sys/bus/serial-base/devices/*:*.*/tty/* - /sys/bus/serial-base/devices/00:04:0.0/tty/ttyS0 - - In the above example, the console can be addressed with - console=00:04:0.0. Note that a console addressed this - way will only get added when the related device driver - is ready. The use of an earlycon parameter in addition to - the console may be desired for console output early on. - uart[8250],io,<addr>[,options] uart[8250],mmio,<addr>[,options] uart[8250],mmio16,<addr>[,options] @@ -1921,6 +1902,28 @@ Format: <bus_id>,<clkrate> + i2c_touchscreen_props= [HW,ACPI,X86] + Set device-properties for ACPI-enumerated I2C-attached + touchscreen, to e.g. fix coordinates of upside-down + mounted touchscreens. If you need this option please + submit a drivers/platform/x86/touchscreen_dmi.c patch + adding a DMI quirk for this. + + Format: + <ACPI_HW_ID>:<prop_name>=<val>[:prop_name=val][:...] + Where <val> is one of: + Omit "=<val>" entirely Set a boolean device-property + Unsigned number Set a u32 device-property + Anything else Set a string device-property + + Examples (split over multiple lines): + i2c_touchscreen_props=GDIX1001:touchscreen-inverted-x: + touchscreen-inverted-y + + i2c_touchscreen_props=MSSL1680:touchscreen-size-x=1920: + touchscreen-size-y=1080:touchscreen-inverted-y: + firmware-name=gsl1680-vendor-model.fw:silead,home-button + i8042.debug [HW] Toggle i8042 debug mode i8042.unmask_kbd_data [HW] Enable printing of interrupt data from the KBD port @@ -2170,12 +2173,6 @@ Format: 0 | 1 Default set by CONFIG_INIT_ON_FREE_DEFAULT_ON. - init_mlocked_on_free= [MM] Fill freed userspace memory with zeroes if - it was mlock'ed and not explicitly munlock'ed - afterwards. - Format: 0 | 1 - Default set by CONFIG_INIT_MLOCKED_ON_FREE_DEFAULT_ON - init_pkru= [X86] Specify the default memory protection keys rights register contents for all processes. 0x55555554 by default (disallow access to all but pkey 0). Can |