The RK3399 Overclock/Undervolt/Voltages Thread

[dsimic]

do you have the same problem? SD running at 50000000Hz, and runs at 150000000Hz only if the SD is connected after the bootup

In my case, an A1-rated Kingston microSD card fails to work at SDR104 speed, but limiting the speed of the MMC interface to SDR50, which still runs at 1.8 V, makes the same microSD card work just fine.  The card itself is fine, it works as expected in an external USB 3.0 card reader.

This is getting radical, you've hacked off a portion of the RF can shield.   If this doesn't make the BQ24171 cool, nothing else will.