lkml.org 
[lkml]   [2013]   [Dec]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/1] mfd: omap-usb-host: Fix USB device detection problems on OMAP4 Panda
- stable@vger.kernel.org since they probably don't care about this
unless the patch is merged.

On 12/02/2013 10:41 AM, Roger Quadros wrote:
> Michael,
>
> On 11/29/2013 05:32 PM, Michael Trimarchi wrote:
>> Hi Roger
>>
>> On Fri, Nov 29, 2013 at 2:01 PM, Roger Quadros <rogerq@ti.com> wrote:
>>> With u-boot 2013.10, USB devices are sometimes not detected
>>> on OMAP4 Panda. To make us independent of what bootloader does
>>> with the USB Host module, we must RESET it to get it to a known
>>> good state. This patch Soft RESETs the USB Host module.
>>>
>>
>> Do you think that we need something similar of usb musb?
>> I have seen the OTG_SYSCONFIG is touched in uboot and
>> only readed in omap2430.c.
>
> I'm not sure about musb. Maybe Sebastian/Felipe have better idea.
> In general I believe that all modules must be reset by the kernel.
>

based on the code at the bottom it touches the first few register(s)
sysconfig. Isn't hwmod actually doing this idle stuff and resting the
device during boot?

> cheers,
> -roger
>>

Sebastian


\
 
 \ /
  Last update: 2013-12-02 13:21    [W:0.058 / U:1.456 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site