[U-Boot] [PATCH 1/2] usb: hub: fix power good delay timing

[Stephen Warren]

On 05/19/2014 02:21 PM, Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> usb_hub_power_on() currently waits for the maximum of (a) the hub port's
> power output to become good, (b) the max time the USB specification
> allows a device to take to connect.
> 
> However, these two operations must occur in series rather than in
> parallel. First, the power supply ramps up to the level required to
> power the USB device, and then the device may take a certain amount of
> time to connect (assert D+/D- pullups).
> 
> Related, the maximum time that a device has to assert pullups is 1s not
> 100ms.
> 
> This is explained in "Connect Timing ECN.pdf", itself part of
> usb_20_042814.zip from www.usb.org.

Marek, does this series look OK?