Hi,

On Tue, May 13, 2014 at 05:34:31PM -0700, Grant wrote:
> Can I disable VBUS while keeping the rest of USB functional for a
> device that does not require bus power?

unfortunately not, your device would see a disconnection. The reason is
that even though you don't really put any load on the bus, the PHY still
samples VBUS levels to know when the session is valid (VBUS > 4.4V).

-- 
balbi

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