[U-Boot] [PATCH 0/2] sunxi: musb: Fix "usb reset" handling

[Hans de Goede]

Hi,

On 15-06-15 21:21, Paul Kocialkowski wrote:
> Le dimanche 14 juin 2015 à 12:40 +0200, Hans de Goede a écrit :
>> Hi Ian, Paul,
>>
>> Here is a patch to fix the problems where most usb devices will no longer
>> work after a "usb reset ", when connected to the otg controller in host
>> mode + a related cleanup patch.
>
> This works fine for an USB storage device and an USB2 keyboard but does
> not work with an USB1 keyboard, with error:
>
> sunxi# usb reset
> resetting USB...
> USB0:   scanning bus 0 for devices... USB device descriptor short read
> (expected 8, got 0)
> No USB Device found

Hmm, did you test my sunxi-wip branch perhaps? This bug does exist there,
but it is the result of me refactoring things so that the musb code can
use the device-model when build in host mode, which will allow enabling
both the otg port in host mode and regular usb hosts in a single build,
which is esp. useful for boards which have the otg hooked up in host-only
mode (e.g. connected to an usb-a receptacle, or usb <-> sata bridge).

I've just retested current u-boot/master with just this patch and the
problem you are describing does not happen then.

Sorry about my sunxi-wip being broken atm I try to always keep it 100%
functional, but well it is a wip tree after all.

Regards,

Hans