[U-Boot] [PATCH v8] usb: align buffers at cacheline

[puneets <puneets@nvidia.com>]

Hi Marek/Tom,
As I understood correctly.
I would merge my changes in "denx-uboot-arm/master" as 
"u-boot-tegra/master", where actually I tested my patch, is
pulled in "denx-uboot-arm/master".

Will that work...

Thanks & Regards,
Puneet

On Monday 02 April 2012 10:02 PM, Marek Vasut wrote:
> Dear Tom Warren,
>
>> Marek,
>>
>>> -----Original Message-----
>>> From: Marek Vasut [mailto:marex at denx.de]
>>> Sent: Monday, April 02, 2012 9:12 AM
>>> To: Tom Warren
>>> Cc: Puneet Saxena; Mike Frysinger; u-boot at lists.denx.de;
>>> sjg at chromium.org; linux at bohmer.net; trini at ti.com;
>>> albert.u.boot at aribaud.net
>>> Subject: Re: [PATCH v8] usb: align buffers at cacheline
>>>
>>> Dear Tom Warren,
>>>
>>>> Marek, Puneet, et al.,
>>>>
>>>>> -----Original Message-----
>>>>> From: Marek Vasut [mailto:marex at denx.de]
>>>>> Sent: Monday, March 19, 2012 8:47 AM
>>>>> To: Tom Warren
>>>>> Cc: Puneet Saxena; Mike Frysinger; u-boot at lists.denx.de;
>>>>> sjg at chromium.org; linux at bohmer.net; trini at ti.com;
>>>>> albert.u.boot at aribaud.net
>>>>> Subject: Re: [PATCH v8] usb: align buffers at cacheline
>>>>>
>>>>> Dear Tom Warren,
>>>>>
>>>>>> Marek,
>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: Marek Vasut [mailto:marek.vasut at gmail.com]
>>>>>>> Sent: Monday, March 19, 2012 7:43 AM
>>>>>>> To: Puneet Saxena
>>>>>>> Cc: Mike Frysinger; u-boot at lists.denx.de; sjg at chromium.org;
>>>>>>> linux at bohmer.net; trini at ti.com; Tom Warren
>>>>>>> Subject: Re: [PATCH v8] usb: align buffers at cacheline
>>>>>>>
>>>>>>> Dear Puneet Saxena,
>>>>>>>
>>>>>>>> Hi Marek,
>>>>>>>> I adapted my patch for git://git.denx.de/u-boot-usb.git master
>>>>>>>> branch. As the build for target "Seaboard" is broken once I
>>>>>>>> enable USB in Seaboard.h, I am unable to test my changes on "u-
>>> boot-usb".
>>>
>>>>>>> u-boot-usb is forked off the mainline u-boot.git ... tegra stuff
>>>>>>> likely isn't pulled there. Simon, can you tell me when this is
>>>>>>> gonna be
>>>>> there?
>>>>>
>>>>>> Simon's USB/fdt patch set will be pulled into -arm first, then
>>>>>> -main, when he adapts the 'panic' putc patchset (implement
>>>>>> pre-console putc for fdt
>>>>>> warning) to meet with Wolfgang's approval. Once that's done
>>>>>> (hopefully early this week), I can submit another pull request to
>>>>>> finally get this series in.
>>>>>>
>>>>>> Simon - can we have an ETA?
>>>>> I'd love to see some ETA on u-boot-arm push from Albert Aribaud :-(
>>>>> Albert, how're you doing ?
>>>>>
>>>>> Thanks!
>>>> u-boot-tegra/master has the fdt/USB patches, and has been pulled into
>>>> ARM master.
>>>>
>>>> We need the cacheline/buffer alignment patch now, to remove the
>>>> volcanic spew whenever you do any USB commands.
>>>>
>>>> Can you guys (Puneet&  Marek, and Mike/Simon if necessary) work
>>>> together to get this in soon?
>>> Ain't you gonna help us? I believe the patch is really close to be
>>> usable, it just needs some easy debugging, won't you volunteer, it'd
>>> really help? :)
>> I can apply the latest patch (v8?) and see how much spew is still present,
>> but I (a) have no expertise in cache/USB issues and (b) have a ton of
>> patches to apply/push for Tegra2 and (as soon as those are in) Tegra3, so
>> my BW is limited, and finally (c) this is Puneet's work, and I'd like to
>> see him complete it (with help from the list).
> Well, everyone does. And that's how FOSS works -- you scratch your own itch by
> sending a patch, thus helping everyone else ;-)
>
> And hey, my boards don't have caches enabled (yet) so this is low-prio for me.
> Sure, if someone has this as a high-prio thing, patch is very welcome :)
>
>> Tom
>>
>>>> Thanks,
>>>>
>>>> Tom
>>>>
>>>>>> Tom
>>>>>>
>>>>>>>> I would have to merge lots of changes from "denx-uboot-tegra"
>>>>>>>> to make it working for "u-boot-usb.git" master branch.
>>>>>>>> I can send the adapted patch if it's needed.
>>>>>>> The problem I see is that there are important USB patches in
>>>>>>> mainline, though they are not in -tegra. So the approach I'd
>>>>>>> take if I were you would be to rebase -tegra atop of mainline
>>>>>>> for yourself and then apply your patch. Does that work for you?
>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Puneet
>>>>>>> Thanks!
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Marek Vasut
>>>>> Best regards,
>>>>> Marek Vasut


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