2015-04-08 11:24:10

by Rupesh Tatiya

[permalink] [raw]
Subject: Re: [PATCH] usb: Enable LPM for USB 2.01+ full-speed devices

>>
>> USB 2.01+ full-speed devices can have extended descriptor as well
>> and can support LPM.
>
> Yes, they in theory can, but what happens if they are actually
> asked to do so? On how many devices have you tested this patch?
>

I have tested this on Qualcomm USB controller, LPM works. LPM works with
same controller with Microsoft Windows as well. I have looked through few
Broadcom/CSR controllers, but could not find one that had USB version >=
2.01.

Thanks,
Rupesh