Re: UART idle

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Ryan <ryanphilips19@xxxxxxxxxxxxxx> [160424 08:46]:
> Hello,
> 
> I wanted to check the OMAP4 UART functionality during the process of
> suspend. If there is UART console activity during the process of
> suspend. Can the console uart port put to idle? I also see that there
> is a idle timer thread which checks for inactivity. How can one
> prevent UART console input during the suspend process.

On omap3/4/5 the SoC won't enter deeper idle states if the
uart is active. The idle timer is for PM runtime that autoidles
the UART based on a timeout.

If the UART blocks suspend, then you need to check where it gets
blocked in drivers/tty. It could be the DMA that blocks suspend.

Regards,

Tony
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux