[U-Boot] [PATCH v3] usbh/ehci: Increase timeout for enumeration

[Marek Vasut]

Dear Vipin Kumar,

> The current logic reads the port status just once after usb_hub_power_on
> and expects the portstatus and portchange to report the connection status
> immediately and correctly.
> 
> Few pen drives are not able to report both of them immediately ie. those
> pens report the connection change but not the connected state after the
> first read. This opportunity once lost is gone for ever because the
> u-boot, unlike linux or any other OS, works in polling mode.
> 
> This patch modifies the logic to read the port status continuously until
> the portstatus and portchange both report a connection change as well as a
> connected state or no connection change and no connection. This logic is
> placed in a timeout of 10 sec. At the end of it, the pen drive would have
> either reported a ONE or a ZERO in bit 1 of portstatus as well as
> portchange.
> 
> It enhances the set of pen drives which can eventually be detected by
> u-boot
> 
> Note: This 10 second timeout is based purely on several experiments done
> with the broken pen drives
> 
> Signed-off-by: Vipin Kumar <vipin.kumar at st.com>
> Acked-by: Igor Grinberg <grinberg at compulab.co.il>

Applied, tested. Thanks

Best regards,
Marek Vasut