//20211021

Freescale i.MX Release Distro 4.1.15-2.0.1 OM-A6-HWTEST /dev/ttymxc0

OM-A6-HWTEST login:
Freescale i.MX Release Distro 4.1.15-2.0.1 OM-A6-HWTEST /dev/ttymxc0

OM-A6-HWTEST login: roo
Password:
Login incorrect

OM-A6-HWTEST login: root
Password:
[root@OM-A6-HWTEST:~]# cd /sys/class/leds/
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# cd beep
[root@OM-A6-HWTEST:beep]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:beep]# cat trigger
[none] rc-feedback nand-disk mmc0 timer oneshot heartbeat backlight gpio
[root@OM-A6-HWTEST:beep]# cd -
/sys/class/leds
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# cd cpu
[root@OM-A6-HWTEST:cpu]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:cpu]# cat trigger
none rc-feedback nand-disk mmc0 timer oneshot [heartbeat] backlight gpio
[root@OM-A6-HWTEST:cpu]# cd -
/sys/class/leds
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# cd mmc0\:\:
[root@OM-A6-HWTEST:mmc0::]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:mmc0::]# cat trigger
none rc-feedback nand-disk [mmc0] timer oneshot heartbeat backlight gpio
[root@OM-A6-HWTEST:mmc0::]# cd -
/sys/class/leds
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# cd user
[root@OM-A6-HWTEST:user]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:user]# cat trigger
[none] rc-feedback nand-disk mmc0 timer oneshot heartbeat backlight gpio
[root@OM-A6-HWTEST:user]# cd -
/sys/class/leds
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# cd cpu/
[root@OM-A6-HWTEST:cpu]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:cpu]# cat trigger
none rc-feedback nand-disk mmc0 timer oneshot [heartbeat] backlight gpio
[root@OM-A6-HWTEST:cpu]# echo none > trigger
[root@OM-A6-HWTEST:cpu]# cat trigger
[none] rc-feedback nand-disk mmc0 timer oneshot heartbeat backlight gpio
[root@OM-A6-HWTEST:cpu]# cd -
/sys/class/leds
[root@OM-A6-HWTEST:leds]# ls
beep@   cpu@    mmc0::@ user@
[root@OM-A6-HWTEST:leds]# echo 1 > cpu
-sh: cpu: Is a directory
[root@OM-A6-HWTEST:leds]# cd -
/sys/class/leds/cpu
[root@OM-A6-HWTEST:cpu]# ls
brightness      max_brightness  subsystem@      uevent
device@         power/          trigger
[root@OM-A6-HWTEST:cpu]# echo 1 > brightness
[root@OM-A6-HWTEST:cpu]# echo 0 > brightness
[root@OM-A6-HWTEST:cpu]#
/////////////////////////////////////////////////////////////////////
//20211022
[root@OM-A6-HWTEST:~]# cat /sys/class/leds/cpu/trigger
none rc-feedback nand-disk mmc0 timer oneshot [heartbeat] backlight gpio
[root@OM-A6-HWTEST:~]# echo none > /sys/class/leds/cpu/trigger
[root@OM-A6-HWTEST:~]# cat /sys/class/leds/cpu/trigger
[none] rc-feedback nand-disk mmc0 timer oneshot heartbeat backlight gpio
[root@OM-A6-HWTEST:~]#