maemo.org - Talk - View Single Post - N900 will not allow USB OTG!

	joerg_rw	2010-03-19 , 21:43
	Posts: 2,222 \| Thanked: 12,651 times \| Joined on Mar 2010 @ SOL 3	#630

Originally Posted by blue_led

I don't drive vbus( this is an offending standard situation ) . 2.7 volts came from n900 itself and this is a very weak voltage source .

As far as the recently leaked schematics are correct, VBUS is hooked up to GAIA TWL4030 PMU chargepump to deliver a correct 5V supply - rather than to the PHY chip.

Alas I've not found any matching node in sysfs to enable the GAIA vbus chargepump. Access to the related register via I2C should be possible nebertheless

jOERG

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