List of config.txt options

Miscellaneous config.txt options: 
 Display 
 disable_splash=1 # Disable the rainbow splash screen on bootup
lcd_rotate=2 # Rotate lcd displays like the official touchscreen 180 degrees;
 
 LEDs 
 [pi0]
dtparam=act_led_trigger=none # Green LED, available triggers are listed in /sys/class/leds/led0/trigger, default is mmc0
dtparam=act_led_activelow=off # inverts the activity state

[all]
dtparam=act_led_trigger=none # Green LED, available triggers are listed in /sys/class/leds/led0/trigger, default is mmc0
dtparam=act_led_activelow=off

dtparam=pwr_led_trigger=none # Red LED, available triggers are listed in /sys/class/leds/led1/trigger, default is default_on
dtparam=pwr_led_activelow=off
 
 Wireless 
 dtoverlay=disable-bt # Disable buit-in bluetooth
dtoverlay=disable-wifi # Disable built-in wifi