root@mcg-gw-3300000001:~# ls -l /sys/class/leds/
total 0
lrwxrwxrwx    1 root     root             0 May  2 05:49 alr-g -> ../../devices/platform/leds/leds/alr-g
lrwxrwxrwx    1 root     root             0 May  2 05:49 alr-r -> ../../devices/platform/leds/leds/alr-r
lrwxrwxrwx    1 root     root             0 May  2 05:49 btn -> ../../devices/platform/leds/leds/btn
lrwxrwxrwx    1 root     root             0 May  2 05:49 esim -> ../../devices/platform/run-control/leds/esim
lrwxrwxrwx    1 root     root             0 May  2 05:49 gps -> ../../devices/platform/run-control/leds/gps
lrwxrwxrwx    1 root     root             0 May  2 05:49 mmc0:: -> ../../devices/platform/soc/1560000.esdhc/leds/mmc0::
lrwxrwxrwx    1 root     root             0 May  2 05:49 run-g -> ../../devices/platform/leds/leds/run-g
lrwxrwxrwx    1 root     root             0 May  2 05:49 run-r -> ../../devices/platform/leds/leds/run-r
lrwxrwxrwx    1 root     root             0 May  2 05:49 stat-g -> ../../devices/platform/leds/leds/stat-g
lrwxrwxrwx    1 root     root             0 May  2 05:49 stat-r -> ../../devices/platform/leds/leds/stat-r
lrwxrwxrwx    1 root     root             0 May  2 05:49 wan-g -> ../../devices/platform/leds/leds/wan-g
lrwxrwxrwx    1 root     root             0 May  2 05:49 x1p -> ../../devices/platform/power-supply/leds/x1p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x2p -> ../../devices/platform/power-supply/leds/x2p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x3p -> ../../devices/platform/power-supply/leds/x3p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x4p -> ../../devices/platform/power-supply/leds/x4p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x5p -> ../../devices/platform/power-supply/leds/x5p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x6p -> ../../devices/platform/power-supply/leds/x6p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x7p -> ../../devices/platform/power-supply/leds/x7p
lrwxrwxrwx    1 root     root             0 May  2 05:49 x8p -> ../../devices/platform/power-supply/leds/x8p

root@mcg-gw-3300000001:~# echo heartbeat > /sys/class/leds/x1p/trigger 
root@mcg-gw-3300000001:~# echo heartbeat > /sys/class/leds/run-g/trigger 
root@mcg-gw-3300000001:~# 
root@mcg-gw-3300000001:~# lsgpio
GPIO chip: gpiochip7, "2-0022", 16 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [output]
	line  3: unnamed unused [input]
	line  4: unnamed unused [output]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [output]
	line  8: unnamed unused [input]
	line  9: unnamed unused [input]
	line 10: unnamed unused [input]
	line 11: unnamed unused [input]
	line 12: unnamed unused [output]
	line 13: unnamed unused [output]
	line 14: unnamed unused [output]
	line 15: unnamed unused [input]
GPIO chip: gpiochip6, "2-0021", 16 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [output]
	line  2: unnamed unused [input]
	line  3: unnamed unused [input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [output]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [input]
	line  9: unnamed unused [output]
	line 10: unnamed unused [input]
	line 11: unnamed unused [input]
	line 12: unnamed unused [input]
	line 13: unnamed unused [output]
	line 14: unnamed unused [input]
	line 15: unnamed unused [input]
GPIO chip: gpiochip5, "2-0020", 16 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [input]
	line  3: unnamed unused [input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [output]
	line  9: unnamed unused [input]
	line 10: unnamed unused [output]
	line 11: unnamed unused [input]
	line 12: unnamed unused [input]
	line 13: unnamed unused [output]
	line 14: unnamed unused [output]
	line 15: unnamed unused [input]
GPIO chip: gpiochip4, "0-0074", 16 GPIO lines
	line  0: "X1P" "x1p" [used, output, active-low]
	line  1: "X2P" "x2p" [used, output, active-low]
	line  2: "X3P" "x3p" [used, output, active-low]
	line  3: "X4P" "x4p" [used, output, active-low]
	line  4: "X5P" "x5p" [used, output, active-low]
	line  5: "X6P" "x6p" [used, output, active-low]
	line  6: "X7P" "x7p" [used, output, active-low]
	line  7: "X8P" "x8p" [used, output, active-low]
	line  8: "X1S" unused [input]
	line  9: "X2S" unused [input]
	line 10: "X3S" unused [input]
	line 11: "X4S" unused [input]
	line 12: "X5S" unused [input]
	line 13: "X6S" unused [input]
	line 14: "X7S" unused [input]
	line 15: "X8S" unused [input]
GPIO chip: gpiochip3, "2330000.gpio", 32 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [input]
	line  3: unnamed "wp" [used, input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [input]
	line  9: unnamed unused [input]
	line 10: unnamed unused [input]
	line 11: unnamed unused [input]
	line 12: unnamed unused [input]
	line 13: unnamed unused [input]
	line 14: unnamed unused [input]
	line 15: unnamed unused [input]
	line 16: unnamed unused [input]
	line 17: unnamed unused [input]
	line 18: unnamed unused [input]
	line 19: unnamed unused [input]
	line 20: unnamed unused [input]
	line 21: unnamed unused [input]
	line 22: unnamed unused [input]
	line 23: unnamed unused [input]
	line 24: unnamed unused [input]
	line 25: unnamed unused [input]
	line 26: unnamed unused [input]
	line 27: unnamed unused [input]
	line 28: unnamed unused [input]
	line 29: unnamed unused [input]
	line 30: unnamed unused [input]
	line 31: unnamed unused [input]
GPIO chip: gpiochip2, "2320000.gpio", 32 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [input]
	line  3: unnamed unused [input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [input]
	line  9: unnamed unused [input]
	line 10: "I_IDSEL0" unused [input]
	line 11: "I_IDSEL1" unused [input]
	line 12: "I_FACTORY" unused [input]
	line 13: "I_BTN" unused [input]
	line 14: "I_KEY_ACT" unused [input]
	line 15: "I_KEY_RADIO" unused [input]
	line 16: unnamed unused [input]
	line 17: unnamed unused [input]
	line 18: unnamed unused [input]
	line 19: unnamed unused [input]
	line 20: unnamed unused [input]
	line 21: unnamed unused [input]
	line 22: unnamed unused [input]
	line 23: unnamed unused [input]
	line 24: unnamed unused [input]
	line 25: unnamed unused [input]
	line 26: unnamed unused [input]
	line 27: unnamed unused [input]
	line 28: unnamed unused [input]
	line 29: unnamed unused [input]
	line 30: unnamed unused [input]
	line 31: unnamed unused [input]
GPIO chip: gpiochip1, "2310000.gpio", 32 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [input]
	line  3: unnamed unused [input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [input]
	line  9: unnamed unused [input]
	line 10: unnamed unused [input]
	line 11: unnamed unused [input]
	line 12: unnamed unused [input]
	line 13: "O_GPS_PWR" "gps" [used, output]
	line 14: unnamed unused [input]
	line 15: unnamed unused [input]
	line 16: unnamed unused [input]
	line 17: unnamed unused [input]
	line 18: unnamed unused [input]
	line 19: unnamed unused [input]
	line 20: unnamed unused [input]
	line 21: unnamed unused [input]
	line 22: unnamed unused [input]
	line 23: "O_ESIM" "esim" [used, output]
	line 24: "O_RUN_LED_G" "run-g" [used, output]
	line 25: "O_RUN_LED_R" "run-r" [used, output]
	line 26: "O_STAT_LED_G" "stat-g" [used, output]
	line 27: "O_STAT_LED_R" "stat-r" [used, output]
	line 28: "O_ALR_LED_G" "alr-g" [used, output]
	line 29: "O_ALR_LED_R" "alr-r" [used, output]
	line 30: "O_WAN_LED_G" "wan-g" [used, output]
	line 31: "O_BTN_LED" "btn" [used, output]
GPIO chip: gpiochip0, "2300000.gpio", 32 GPIO lines
	line  0: unnamed unused [input]
	line  1: unnamed unused [input]
	line  2: unnamed unused [input]
	line  3: unnamed unused [input]
	line  4: unnamed unused [input]
	line  5: unnamed unused [input]
	line  6: unnamed unused [input]
	line  7: unnamed unused [input]
	line  8: unnamed unused [input]
	line  9: unnamed unused [input]
	line 10: unnamed unused [input]
	line 11: unnamed unused [input]
	line 12: unnamed unused [input]
	line 13: unnamed unused [output]
	line 14: unnamed unused [input]
	line 15: unnamed unused [input]
	line 16: unnamed unused [input]
	line 17: unnamed unused [input]
	line 18: unnamed unused [input]
	line 19: unnamed unused [input]
	line 20: unnamed unused [input]
	line 21: unnamed unused [input]
	line 22: unnamed unused [input]
	line 23: unnamed unused [output]
	line 24: unnamed unused [output]
	line 25: unnamed unused [output]
	line 26: unnamed unused [output]
	line 27: unnamed unused [output]
	line 28: unnamed unused [output]
	line 29: unnamed unused [output]
	line 30: unnamed unused [output]
	line 31: unnamed unused [output]