LED (SBC-i.MX51)

The SBC contains a full color LED (OVSARGB3R8) that is connected to the MC13892 power management IC.

Linux kernel configuration

Device Drivers  --->
  [*] LED Support  --->
    <*>   LED Class Support
    <*>   LED Support for mc13892 pmic
  MXC support drivers  --->
    MXC PMIC support  --->
      <*> MC13892 PMIC
      [*]   Support PMIC I2C Interface
      <*> MC13892 Light and Backlight support

Test in Linux

• Blue light:

"echo 255 > /sys/class/leds/pmic_ledsb/brightness"

• Green light:

"echo 0 > /sys/class/leds/pmic_ledsb/brightness"
"echo 255 > /sys/class/leds/pmic_ledsg/brightness"

• Red light:

"echo 0 > /sys/class/leds/pmic_ledsg/brightness"
"echo 255 > /sys/class/leds/pmic_ledsr/brightness"

• White light:

"echo 255 > /sys/class/leds/pmic_ledsb/brightness"
"echo 255 > /sys/class/leds/pmic_ledsg/brightness"