Can I just confirm that it is impossible to power a usb 2.5" hard drive connected to the BBB with a 5V 2A power adapter and nothing else. Is a powered usb hub my only choice?
On Wednesday, 5 June 2013 20:22:16 UTC+2, Jordi Guillaumes Pons wrote: > > > Hello, > > I'm having trouble when I try to power a BBB using a USB charger via the > miniUSB port. As I have read, this is a common problem (it seems to starve > its 500mA input limit when booting from a uSD and trying to use the > ethernet). > > Now, I know it is posible to set up the power controller to allow 1300 or > 1800 mA, talking to the tps65217c via I2C and overwriting the power path > control register at address 0x01. Another different issue is if that > _should_ be done, and _how_. So my questions are: > > 1) Is it safe to do that? The "barrel" power input is maxed at 2500mA, and > If I understand correctly the datasheet, it does not seem to be anything > what could explode in the mUSB current path... > > 2) HOW should it be done? I have tried to put a i2c wm statement in the > /boot/uboot/uEnv.txt file but when I read back the register after linux > boots it is back at 500mA, so I guess linux resets the device at boot... > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
