linux/Documentation/devicetree
Darwin Dingel bdb48e4c7d dt-bindings: serial: 8250: Add rate limit for serial port input overruns
When a serial port continuously experiences input overrun from
(1) continuous receive characters from remote and or (2) hardware
issues, its interrupt handler can preempt other tasks especially
when the system is busy (ie. boot up period). This can cause other
tasks to get starved of processing time from the CPU.

When this dts binding is enabled and input overrun on the serial port
is detected, serial port receive will be throttled to give some breathing
room for processing other tasks. Value provided will be in milliseconds.

&serial0{
	overrun-throttle-ms = <500>;
};

Signed-off-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-17 16:02:57 +01:00
..
bindings dt-bindings: serial: 8250: Add rate limit for serial port input overruns 2018-12-17 16:02:57 +01:00
booting-without-of.txt
changesets.txt
dynamic-resolution-notes.txt Documentation: remove dynamic-resolution-notes reference to non-existent file 2018-08-13 08:20:10 -06:00
of_unittest.txt
overlay-notes.txt
todo.txt
usage-model.txt