[U-Boot] FPGA detection failure on Cyclone V soc development kit

[Phil Reid]

On 6/04/2016 11:07 PM, Marek Vasut wrote:
> On 01/27/2016 03:18 PM, Måns Rullgård wrote:
>> Chin Liang See <clsee at altera.com> writes:
>>
>>> On Wed, 2016-01-27 at 13:46 +0000, Måns Rullgård wrote:
>>>> Chin Liang See <clsee at altera.com> writes:
>>>>
>>>>> On Fri, 2016-01-22 at 10:35 -0600, Dinh Nguyen wrote:
>>>>>> On 01/21/2016 10:31 AM, Marek Vasut wrote:
>>>>>>> On Thursday, January 21, 2016 at 05:20:33 PM, Måns Rullgård
>>>>>>> wrote:
>>>>>>>> Tom Rini <trini at konsulko.com> writes:
>>>>>>>>> On Wed, Jan 20, 2016 at 08:31:30PM +0000, Måns Rullgård
>>>>>>>>> wrote:
>>>>>>>>>> I'm having a problem with u-boot 2016.01 failing to
>>>>>>>>>> detect the FPGA on my Altera Cyclone V SoC Development
>>>>>>>>>> Kit.  On startup, it simply prints "FPGA: Not Altera chip
>>>>>>>>>> ID" (the ID having been read as all -zero).  No amount of
>>>>>>>>>> messing with jumpers or switches makes a difference.  The
>>>>>>>>>> software on the SD card included in the box appears to
>>>>>>>>>> work, so on a whim I took the SPL pre-loader from this
>>>>>>>>>> card and combined it with the main 2016.01 u-boot.  This
>>>>>>>>>> makes the detection succeed, despite Marek baulking at
>>>>>>>>>> this idea.  The "good" SPL identifies as "U-Boot SPL
>>>>>>>>>> 2013.01.01 (Dec 04 2014 - 08:59:41)" which is a different
>>>>>>>>>> build date than the main u-boot on the same SD card, so
>>>>>>>>>> which source code version it was built from is anyone's
>>>>>>>>>> guess.
>>>>>>>>>>
>>>>>>>>>> What's interesting is that Marek's board works with u
>>>>>>>>>> -boot 2016.01 while mine fails even with the very same
>>>>>>>>>> binary.  The boards are different revisions (his
>>>>>>>>>> 100-0321003-C1, mine -E1), and the main Cyclone V chips
>>>>>>>>>> are also different (his 5CSXFC6D6F31C8NES, mine
>>>>>>>>>> 5CSXFC6D6F31C6N).
>>>>>>>>>>
>>>>>>>>>> Any suggestions for what to try next?
>>>>>>>>>   v2016.01 release or to of tree?  If top of tree, try
>>>>>>>>> http://patchwork.ozlabs.org/patch/570009/
>>>>>>>>   Tried release, top of tree, and top of tree with that patch.
>>>>>>>> Nothing works.
>>>>>
>>>>> Both part number is different in speed grade. This is first time I
>>>>> heard about this issue. A quick suspect might due to clock. Can you
>>>>> try to copy pll_config.h that is passing (from 2013.01.01) and
>>>>> replace
>>>>> the one in 2016?
>>>>
>>>> That doesn't work at all.  Now it fails to detect the FPGA, then
>>>> hangs after printing the amount of DRAM.

This is sorta similar to what I see with my SocDK occasionally.
Sometimes rints ram and then hangs, other timmes fails to find mmc.
As I mentioned in other email.

>>>
>>> Can you share with me the pll_config for 2013.01.01 that is working for
>>> you?
>>
>> I don't know that it is.  The only thing I've found to work is the
>> unidentified SPL on the SD card that came with the dev kit.
>
> I pushed some DDR fixes into u-boot-socfpga/ddr branch [1], which fixed
> DDR calibration issue on a board I have in here. Can you try them ? Thanks
>
> [1]
> http://git.denx.de/?p=u-boot/u-boot-socfpga.git;a=shortlog;h=refs/heads/ddr
>


-- 
Regards
Phil Reid