Power via GPIO Android?

[ShaneGT]

Is there a fix for powering the board from GPIO with android? There was a kernal fix for tinker os. It acts like it is shorted when I power via gpio, usb turns on and boots android fine

[kamila25]

I use a chassis supply to power most boards that come equipped with micro-USB.  To accomplish that I use a voltmeter to set the supply voltage to 5.25 volts, and apply the power through the GPIO header on the RPi clones, making sure to get both 5V and 2 gnd pins.  
 
With a quality supply there wouldn't be a huge difference between plugging straight into GPIO or adding filtering/over voltage protection.  I would recommend a 0.1 uF ceramic capacitor tied between the 5V and ground to reduce power supply related noise.  The Tinkerboard filters all of the important voltages through a PMIC's various regulators, so it is a bit more resilient than some other boards, however USB and HDMI are not as well protected.  I can provide some more info later, at the day job currently.