linux-kernel - Re: [PATCH 1/2] usb: dwc3: gadget: Fix full speed mode

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Message-ID: <4b44adf6-7569-71bf-b4c6-e811aeebfd1d@ti.com>
Date:   Wed, 7 Dec 2016 14:16:14 +0200
From:   Roger Quadros <rogerq@...com>
To:     Felipe Balbi <balbi@...nel.org>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] usb: dwc3: gadget: Fix full speed mode

Hi,

On 29/11/16 14:28, Roger Quadros wrote:
> Hi,
> 
> On 29/11/16 13:51, Felipe Balbi wrote:
>>
>> Hi,
>>
>> Roger Quadros <rogerq@...com> writes:
>>> DCFG.DEVSPD == 0x3 is not valid and we need to set
>>> DCFG.DEVSPD to 0x1 for full speed mode.
>>
>> seems like it has been made invalid somewhere between 1.73a and
>> 2.60a. Can you figure it out from Documentation why and when it was made
>> invalid? We might need revision checks here.
>>
> 
> I'll try to dig out more.

I couldn't figure out more information on this. The changelogs in the TRMs
don't capture this change and I don't have access to all TRM versions
so I can't say which version it got changed and why.

Can we please involve someone from Synopsis to provide this information?
Thanks.

cheers,
-roger