tree 6e0f4bbe7869570d8faf3be03f07d23387f254de
parent fc16f06070301b5512dd774f6d4c65543a4825f5
author Jan Kundrát <jan.kundrat@cesnet.cz> 1534769537 +0200
committer Jan Kundrát <jan.kundrat@cesnet.cz> 1534831741 +0200

clearfog: fast-blink the white LED early on

Now that we're using an I2C LED driver with no HW reset at CPU-reboot,
the "we're OK" indicators remained on even after reboot.

Fix this by reseting the LED driver via its SW reset, and then start
rapid blinking the status LED in white color (with a reduced duty cycle
and brightness so that it's still reasonably pleasant).

I'm not doing this from the U-Boot script because this approach allows
me to get before that three-second countdown for autoboot.

Change-Id: I2c908a036308d19c8a1b79a607b1c63ec01e8ba6