[U-Boot-Users] NAND driver updates

[Stig A. Olsen <stig.olsen@tandberg.com>]

Hi,

I think you're absolutely right as well, better to branch out our 
updates until we have resolved these issues. Since YAFFS/MTD is new, 
most people will depend on jffs2 working, and that must be working 
before introducing changes.

best regards,
Stig

Matthias Fuchs wrote:
> Hi Stefan,
>
> I totally agree with your suggestion. Let's move the NAND update into 
> a separate branch for testing.
>
> The missing or faulty NAND features are an absolute no-go because we
> use NAND on many of our boards. But we definitely should not lose track
> of the NAND updates. Especially William's YAFFS support is a cool outstanding
> feature I would love to see in the main repo sooner or later.
>
> Matthias
>
> On Tuesday 15 January 2008 09:49, Stefan Roese wrote:
>   
>> Hi All,
>>
>> On Saturday 05 January 2008, Stefan Roese wrote:
>>     
>>> I just updated the master branch of the NAND custodian repository with the
>>> patches from William Juul:
>>>
>>> http://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot/u-boot-nand-flash.git;a=shor
>>> tlog;h=master
>>>
>>> This patchset brings the U-Boot NAND subsystem in sync again with the Linux
>>> 2.6.22.1 NAND code. Thanks go to William Juul and his colleagues for the
>>> hard
>>>       
>> As it seems the current status of the new NAND subsystem provided by William 
>> Juul and his colleges, has still some problems. As far as I see it right now 
>> here a list (please let me know if I missed something):
>>
>> - DOC support broken and removed for now
>>   - needs to be ported and tested on HW with DOC
>> - 'nand read.jffs2/.i' not implemented at all
>> - 'nand write.jffs2/.i' not implemented correctly
>>   - Doesn't skip bad blocks
>>   - From my quick first look, it doesn't write the OOB correctly
>> - Extensive testing on other platforms needed
>>
>> So with all these flaws, it doesn't make sense from my point of view, to pull 
>> these changes into the official U-Boot repository in this merge window. I 
>> think we should delay this merge for 1 or 2 U-Boot versions, until the 
>> problems mentioned above are resolved.
>>
>> Any thoughts/comments on this?
>>
>> If we agree on this merge delay, then I suggest that I move this mtd update 
>> into a different branch (it's currently in the master branch :-() of the 
>> u-boot-nand-flash repository and base the master branch on the master branch 
>> of Wolfgang's official repository. This way updates and fixes to the "old" 
>> NAND subsystem can be handled better.
>>
>> Again, any comments?
>>
>> Thanks.
>>
>> Best regards,
>> Stefan
>>
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>>
>>     
>
>   


-- 
Stig A. Olsen
TANDBERG R&D
Mobile: +47 98290058
Phone:  +47 67587418
E-mail: stig.olsen at tandberg.com
http://www.tandberg.com

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