AnsweredAssumed Answered

Wakeup sources are not available in folder /dev

Question asked by Aaron Padilla on Oct 5, 2016
Latest reply on Oct 6, 2016 by igorpadykov

I am trying to evaluate the low power modes and the wakeup time on a SCM-i.MX 6Quad but in the original image included in MMC I didn't found the files to configure the wakeup sources like an example:

 

/sys/devices/platform/imx-uart.1/tty/ttymxc1/power/wakeup

 

All that I have in the /sys/devices/platform is: 

 

Vivante GCCore

hdmi-audio-codec

imx6q-cpufreq.0

reg-dummy

snd-soc-dummy
alarmtimer

imx-hdmi-audio

power regulatory.0

uevent

 

 

Then I have compiled a new image, including the next  power management option in menuconfig:

 

[*] User space wakeup sources interface

 

But I am getting exactly the same, to compile I did the following:

 

$ mkdir fsl-arm-yocto-bsp

$ cd fsl-arm-yocto-bsp

$ repo init -u git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b scm-imx-3.14.52-1.1.0_ga

$ repo sync

 

$ DISTRO=fsl-imx-x11 MACHINE=imx6dqscm-1gb-qwks source fsl-setup-release.sh -b build-x11

$ bitbake -c menuconfig linux-imx   (to activate User space wakeup sources interface)

$ bitbake fsl-image-gui

 

 

Could someone advice?

 

Thanks in advance

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