[U-Boot] Newbie SPL question for socfpga_sockit

[Marek Vasut]

On 03/29/2016 03:44 AM, George Broz wrote:
> On 20 March 2016 at 08:55, Dinh Nguyen <dinguyen at opensource.altera.com> wrote:
>>
>>
>> On 03/16/2016 08:35 PM, Marek Vasut wrote:
>>>>
>>>> Does this work for anybody else?
>>>> Is it in anyone's experience that these (cheaper) Terasic
>>>> eval boards are generally out of spec?
>>>>
>>>> Is there a way to relax the calibration parameters? the USB parameters?
>>>>
>>>> Would it help if I posted debug output?
>>>
>>> Sorry for the late reply, I am horribly overloaded now. I asked someone
>>> in #u-boot who has the DE0-NANO-SOC board to test latest u-boot/master
>>> on it and it apparently worked for him. I should get some more feedback
>>> in the morning [ see http://pastebin.com/CM1QJGnh ] .
>>>
>>> Still, this is getting real creepy. You are the second person who is
>>> complaining about misbehavior of terasic boards with mainline u-boot
>>> and whatever I do, I cannot replicate this.
>>>
>>> I am at least CCing the Altera guys. Sorry I have no better suggestion
>>> for you :(
>>
>> I don't have any problems with mainline U-Boot and SPL on my DE0-NANO-BOARD:
>>
>> U-Boot SPL 2016.03-00307-ge4fb863 (Mar 20 2016 - 10:37:13)
>> drivers/ddr/altera/sequencer.c: Preparing to start memory calibration
>> drivers/ddr/altera/sequencer.c: CALIBRATION PASSED
>> drivers/ddr/altera/sequencer.c: Calibration complete
>> Trying to boot from MMC
>>
>>
>> U-Boot 2016.03-00307-ge4fb863 (Mar 20 2016 - 10:37:13 -0500)
>>
>> CPU:   Altera SoCFPGA Platform
>> FPGA:  Altera Cyclone V, SE/A4 or SX/C4, version 0x0
>> BOOT:  SD/MMC Internal Transceiver (3.0V)
>>        Watchdog enabled
>> I2C:   ready
>> DRAM:  1 GiB
>> MMC:   dwmmc0 at ff704000: 0
>> In:    serial
>> Out:   serial
>> Err:   serial
>> Model: Terasic DE0-Nano(Atlas)
>> Net:   eth0: ethernet at ff702000
>> Hit any key to stop autoboot:  0
>> =>
>>
>> Sorry, I know that doesn't help. So let's walk through my workflow. I am
>> not using any Altera tools when I build.
>>
>> $make socfpga_de0_nano_soc_defconfig
>> $make u-boot-with-spl.sfp
>> $dd if=u-boot-with-spl.sfp of=/dev/sdb3
>>
>> My gcc is: arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.7.3-12ubuntu1) 4.7.3
>>
>> Has the board ever worked for you at all? Can you try this image:
>>
>> https://rocketboards.org/foswiki/view/Documentation/AtlasSoCSdCardImage
>>
>> Dinh
>>
>>
> 
> Hi All,
> 
> Was away...sorry... back again.
> 
> Dinh - my workflow is exactly as yours is above.
> 
> I've used several toolchains - always the same result.
> 
> The first de0_nano_soc board I bought has no problem booting from the
> factory supplied image:
> 
>    SPL: U-Boot SPL 2013.01.01 (Dec 29 2014 - 15:29:15)
>    Image: U-Boot 2013.01.01 (Dec 30 2014 - 12:07:34)
> 
> and it even works with some USB sticks.
> 
> But if I build a new SPL/image with workflow above using v2016.03
> 
> (git clone git://git.denx.de/u-boot.git u-boot/ or git clone
> http://git.denx.de/u-boot.git u-boot/)
> 
> then I get the intermittent failing memory calibration and no USB
> (dwc_otg_core_host_init: Timeout!...)
> 
> On my sockit board the memory calibration fails every time.

Are you willing to debug this stuff ? I have an idea how to do
comparative debugging if you have time to spare.

> So I ordered and received a _second_ de0_nano_soc board.
> 
> The same SPL/image that was intermittently failing on the first board
> works on the second board. I have not seen it fail after 20 reboots.
> 
> Unfortunately, USB behaves the same (dwc_otg_core_host_init: Timeout!...)
> 
> Not sure what that means... marginal boards from Terasic? Calibration
> tests/parameters too stringent?

Code being slightly different than what Altera ships ... ;-)

> --George
> 


-- 
Best regards,
Marek Vasut