GPIO/Ethernet LEDs overlay for Rock S0

[grixm]

Hi guys, I created another device tree overlay that I needed, to enable two user leds on GPIO. Specifically GPIO0_B7 and GPIO0_C0, which is pins 27 and 28 on the header. Posting it here in case someone needs it, like I did with with the SPIdev overlay too.

 

Here it is: rk3308-user-leds.dts

 

What I needed this for is ethernet port LEDs, since the original connector does not include them. To get standard ethernet LED behavior on these newly defined LEDs, you can do this (you need su access):
 

modprobe ledtrig-netdev
echo "netdev" > /sys/class/leds/rock-s0\:orange\:user1/trigger
echo "netdev" > /sys/class/leds/rock-s0\:green\:user2/trigger
echo "1" > /sys/class/leds/rock-s0\:orange\:user1/rx
echo "1" > /sys/class/leds/rock-s0\:green\:user2/link
echo "end0" > /sys/class/leds/rock-s0\:orange\:user1/device_name
echo "end0" > /sys/class/leds/rock-s0\:green\:user2/device_name

(Change end0 to eth0 in the last two lines if you use ubuntu-based image instead of debian-based (minimal).