Hi Tathagata,

On 12/12/2011 05:51 AM, Tathagata Das wrote:
> Hi Hauke,
>  WNR3500Lv2 is BCM5357 based. I did not see any SSB based NAND flash. So
> I will remove that section from my patch and repost it. Also I will try
> to use functions provided in drivers/mtd/nand/nand_base.c if possible. I
> w ill repost the patch before next weekend so that you can look closely
> into it.

That sounds good.

> I have made some progress in USB section for the same device and
> currently I am getting probe. However it will be really helpful I can
> use your patch. I have seen a list patches available at
> https://github.com/hauke/openwrt/tree/linux-3.2/target/linux/brcm47xx/patches-3.2.
> Could you please tell me the exact name of the patch ?
It is divided into many patches as it consist of different modules.
The patches for usb are from 0028 to 0033.
> 
> I will also submit bootlog, vendor firmware and OpenWRT firmware along
> with my modified patch.
nice.
> 
> Regards,
> Tathagata
> 
> On 12/11/2011 10:56 PM, Hauke Mehrtens wrote:
>> Hi Tathagata,
>>
>> in general this patch looks good and it could be accepted. I will look
>> closely into it next weekend, I do not have time for now.
>>
>> I just saw your post regarding usb:
>> https://forum.openwrt.org/viewtopic.php?pid=148104 I have patches to add
>> a usb driver for bcma devices:
>> https://github.com/hauke/openwrt/tree/linux-3.2 I will try to add it to
>> OpenWrt trunk next weekend or so, but you could try it now.
>>
>> Using drivers/mtd/nand/nand_base.c, if it provides some of the functions
>> needed, it would be nice to use them.
>>
>> Is the WNR3500L V2.0 BCM5357 based? I saw that there are some
>> enhancements in the NAND driver needed to get support for the BCM4706
>> used on the WNDR4500.
>> If you have not seen any and I do not think there will be any SSB based
>> device with NAND flash out there, we do not need to add support for it
>> to ssb.
>> A boot log with the vendor firmware and OpenWrt would be nice, also to
>> see what other chips and cores are in that device.
>>
>> Hauke
>>
>> On 12/11/2011 05:49 PM, tathagata wrote:
>>> Hi Hauke,
>>>   Thanks.
>>> Netgear WNR3500Lv2 hardware uses this flash type. I tested this patch on
>>> this particular platform. It uses BCMA based devices. I will send you
>>> kernel .config file and boot log message if you want.
>>> I shall look into drivers/mtd/nand/nand_base.c file and give you my
>>> analysis.
>>>
>>> Can this patch be accepted ?
>>>
>>> Regards,
>>> Tathagata
>>>
>>> On 11.12.2011 05:48, Hauke Mehrtens wrote:
>>>> On 12/09/2011 08:16 AM, Tathagata Das wrote:
>>>>> Hi,
>>>>> Attached is the kernel patch to support brcm47xx NAND flash.
>>>>> I have used latest trunk source code to create this patch.
>>>>>
>>>>> Regards,
>>>>> Tathagata<tathag...@alumnux.com>
>>>> Hi Tathagata,
>>>>
>>>> nice patch.
>>>> I had a quick look over your big patch. I did not know that there is a
>>>> third flash type used on brcm43xx Broadcom devices, on what device did
>>>> you found it? I did a search in the source code on my hard disk and the
>>>> WNDR4500 source code was the only containing a driver for this NAND
>>>> chips. Is is really used on SSB and BCMA based devices?
>>>>
>>>> Sometimes there is "serial flash" in the header and not "NAND flash".
>>>> When finding a SSB NAND flash it will try to initialize serial flash
>>>> instead. Why are you using your own partition parser? Do Braodcom chips
>>>> using NAND do something different from other chips?
>>>> Is it possible to use drivers/mtd/nand/nand_base.c?
>>>>
>>>> Hauke
>>

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