On Mon, 10 Dec 2018 11:27:39 +1300, Darwin Dingel wrote:

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 <redacted>
---

Notes:
    Changelog
    v1->v2:
    - Separated dts binding to another patch
    
    v2->v3:
    - Fixed commit message and reviewed-by fields

 Documentation/devicetree/bindings/serial/8250.txt | 1 +
 1 file changed, 1 insertion(+)

Reviewed-by: Rob Herring <robh@kernel.org>