On 10/29/2013 09:50 AM, Ezequiel García wrote:
> Oh, sorry then. I thought you were related in some way to Circuitco.
> Anyway, looking at the NAND cape wiki page, there's a sign saying
> there's no software support for the cape.
>
> Odd as it sound, maybe the cape is really not usable :-(
It seems that the issue is like this:
1) Current U-Boot from git supports (8Bit-)NAND. It can be used by U-Boot (!)
by means of the "nand ... " commands. You can write images to NAND and read
them back.
2) (8Bit-)NAND also works with the beaglebone kernel (3.8.13) when the device
tree
contains a correct gpmc node with
ti,nand-ecc-opt = "bch8";
or
ti,nand-ecc-opt = "sw";
Both seem to work. SO you can use UBI on your NAND.
3) But the NAND implementation - probably the ECC schemes - from recent U-Boot
and the beagleboard repository are incompatible. This is the same even with the
mentioned
U-Boot NAND patch by Pekon Gupta applied.
But I cannot tell which side (u-Boot or Linux) is right. Perhaps its a kernel
3.8
issue. I will try a more recent kernel, but perhaps anybody know where it comes
from.
Matthias
>
> In case anybody has this same issue, there are some patches floating
> around from Pekon Gupta to support x16 NAND in U-Boot, but they are
> still work-in-progress and could need some tweaking:
>
> http://lists.denx.de/pipermail/u-boot/2013-September/162294.html
>
> Thanks!
> Ezequiel
>
> On 28 October 2013 21:36, Gerald Coley <ger...@beagleboard.org> wrote:
>> Ahh, well. We don't sell capes. That is done by third parties. BB.org has no
>> capes. They are made by various manufacturers. I suggest you contact the
>> manufacturer of that board direct. There may also be others that have used
>> that cape that can also help you out.
>>
>> The TI forum won't help on the capes. again. I suggest you contact the
>> manufacturer of that board direct.
>>
>> Gerald
>>
>>
>>
>> On Mon, Oct 28, 2013 at 4:58 PM, Ezequiel García
>> <ezequ...@vanguardiasur.com.ar> wrote:
>>>
>>> Ah, OK. I thought you provided some minimal software to use the capes
>>> you sold.
>>>
>>> Was I wrong? In that case, sorry for bothering.
>>>
>>> I'll ask in the TI forum, although they don't seem the most
>>> knowledgeable engineers out there. Let's cross fingers and hope that I
>>> get lucky.
>>>
>>> Right now, I have this cape connected, but it's completely unusable to me,
>>> without the capability of booting to it :-(
>>>
>>> Thanks for the prompt answer!
>>>
>>> On 28 October 2013 14:14, Gerald Coley <ger...@beagleboard.org> wrote:
>>>> Nope. That is a SW question. You might try the TI e2e forum, I know that
>>>> support for it is inside TI.
>>>>
>>>> http://e2e.ti.com/support/arm/default.aspx
>>>>
>>>> Gerald
>>>>
>>>>
>>>> On Mon, Oct 28, 2013 at 12:07 PM, <ezequ...@vanguardiasur.com.ar> wrote:
>>>>>
>>>>> Hi Gerald,
>>>>>
>>>>> I have the 16-bit NAND cape connected to me Beaglebone Black board in
>>>>> my
>>>>> desk.
>>>>>
>>>>> Using mainline U-Boot and kernel the NAND is detected (had to modify
>>>>> the
>>>>> muxing for 16-bit)
>>>>> but the nand write/read doesn't work. I get "ECC uncorrectable" on
>>>>> every
>>>>> "nand read".
>>>>>
>>>>> Can you point me to some custom U-Boot tree where this is supported? I
>>>>> need to boot from NAND, so I need
>>>>> to put both SPL and U-Boot in the flash, but for now, I would like to
>>>>> at
>>>>> least flash the kernel to NAND and boot it from SD.
>>>>>
>>>>> Sorry to ask you directly, but I've been googling all past week for
>>>>> this
>>>>> issue, and I found nothing but to hack
>>>>> U-Boot myself!
>>>>>
>>>>> Regards and thanks in advance!
>>>>> Ezequiel
>>>>>
>>>>> El martes, 28 de agosto de 2012 21:13:07 UTC-3, Gerald escribió:
>>>>>>
>>>>>> No idea at all. We should have support for NAND in the BeagleBone
>>>>>> release
>>>>>> in about 4-6 weeks. In the mena time you best bet may be to get help
>>>>>> on the
>>>>>> TI forums to get access to the unofficial things that is currently
>>>>>> going on.
>>>>>> I do know that you will need changes to UBoot for NAND to work in
>>>>>> linux in
>>>>>> general.
>>>>>>
>>>>>> Gerald
>>>>>>
>>>>>> On Tue, Aug 28, 2012 at 7:08 PM, Stan Hu <sta...@gmail.com> wrote:
>>>>>>>
>>>>>>> Gerald,
>>>>>>>
>>>>>>> I got the onboard NAND flash working on U-Boot by disabling the MMC1
>>>>>>> pin
>>>>>>> mux (the BeagleBone daughter card settings was reconfiguring the pad
>>>>>>> for
>>>>>>> GPMC_CSN0), but now Linux still doesn't seem to recognize the NAND
>>>>>>> chip.
>>>>>>> The manufacturer and chip ID return 0 right now.
>>>>>>>
>>>>>>> I checked that the pin mux settings are right in Linux. Looking at
>>>>>>> the
>>>>>>> scope, I think the chip select line is being toggled way too fast--it
>>>>>>> doesn't remain active low for long enough. Do you have any idea why
>>>>>>> this
>>>>>>> might be happening?
>>>>>>>
>>>>>>> On Tue, Aug 28, 2012 at 12:18 PM, Gerald Coley
>>>>>>> <ger...@beagleboard.org>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> We have a memory cape in house where we have 16b NAND working. I
>>>>>>>> don't
>>>>>>>> believe anything has been done with 8b.
>>>>>>>>
>>>>>>>> Gerald
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tue, Aug 28, 2012 at 2:13 PM, Stan Hu <sta...@gmail.com> wrote:
>>>>>>>>>
>>>>>>>>> I've got an 8-bit Micron MT29 NAND flash hooked up to the GPMC
>>>>>>>>> lines
>>>>>>>>> on a custom board derived from the BeagleBone and AM335x EVM. The
>>>>>>>>> NAND
>>>>>>>>> flash is hooked up to the GPMC lines identically to the AM335X EVM.
>>>>>>>>>
>>>>>>>>> U-Boot does not see the NAND flash for some reason. When I probe
>>>>>>>>> the
>>>>>>>>> WE and RE GPMC lines, I can see that the processor is talking to
>>>>>>>>> the NAND
>>>>>>>>> chip, sending the RESET and retrieving the ONFI ID. The processor
>>>>>>>>> does not
>>>>>>>>> boot off this NAND because there is nothing programmed in it, so
>>>>>>>>> the system
>>>>>>>>> boots off the SD card.
>>>>>>>>>
>>>>>>>>> However, in the U-Boot config for the BeagleBone/AM335X evm
>>>>>>>>> (include/configs/am335x_evm.h) appears to be configured to use talk
>>>>>>>>> to NAND
>>>>>>>>> via SPI. Is there a reason why this is the case, when the AM335x
>>>>>>>>> schematics
>>>>>>>>> show that the onboard NAND is connected via GPMC? I tried using
>>>>>>>>> the U-Boot
>>>>>>>>> from TI's PSP, but that version of U-Boot does not seem to be
>>>>>>>>> talking on the
>>>>>>>>> GPMC lines too.
>>>>>>>>>
>>>>>>>>> Has anyone ever gotten NAND to work directly on the main board? I
>>>>>>>>> was
>>>>>>>>> going to recompile U-Boot with the GPMC options enabled, but is
>>>>>>>>> there
>>>>>>>>> something obvious that I'm missing preventing me from getting this
>>>>>>>>> to work.
>>>>>>>>>
>>>>>>>>> Incidentally, I also modified the Linux kernel (board-am335x.c) to
>>>>>>>>> load the NAND, but all I get back from the chip and manufacturer
>>>>>>>>> IDs is
>>>>>>>>> 0xFF.
>>>>>>>>>
>>>>>>>>> -- To join: http://beagleboard.org/discuss
>>>>>>>>> To unsubscribe from this group, send email to:
>>>>>>>>> beagleboard...@googlegroups.com
>>>>>>>>>
>>>>>>>>> Frequently asked questions: http://beagleboard.org/faq
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Gerald
>>>>>>>>
>>>>>>>> ger...@beagleboard.org
>>>>>>>> http://beagleboard.org/
>>>>>>>> http://circuitco.com/support/
>>>>>>>>
>>>>>>>> -- To join: http://beagleboard.org/discuss
>>>>>>>> To unsubscribe from this group, send email to:
>>>>>>>> beagleboard...@googlegroups.com
>>>>>>>>
>>>>>>>> Frequently asked questions: http://beagleboard.org/faq
>>>>>>>
>>>>>>>
>>>>>>> -- To join: http://beagleboard.org/discuss
>>>>>>> To unsubscribe from this group, send email to:
>>>>>>> beagleboard...@googlegroups.com
>>>>>>>
>>>>>>> Frequently asked questions: http://beagleboard.org/faq
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Gerald
>>>>>>
>>>>>> ger...@beagleboard.org
>>>>>> http://beagleboard.org/
>>>>>> http://circuitco.com/support/
>>>>>>
>>>>> --
>>>>> For more options, visit http://beagleboard.org/discuss
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>>>
>>>
>>>
>>> --
>>> Ezequiel García, VanguardiaSur
>>> www.vanguardiasur.com.ar
>>>
>>> --
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