Hi Fabio,
On 08/29/2016 10:00 AM, Eric Nelson wrote:
> On 08/29/2016 04:58 AM, Fabio Estevam wrote:
>> On Mon, Aug 29, 2016 at 12:20 AM, Fabio Estevam <feste...@gmail.com> wrote:
>>> From: Fabio Estevam <fabio.este...@nxp.com>
>>>
>>> When running NXP 4.1 kernel with U-Boot mainline we observe a
>>> hang when going into the lowest operational point of cpufreq.
>>>
>>> Comparing the DDR calibration values against NXP U-Boot showed
>>> that the values were incorrect.
>>>
>>> Adjust the calibration values so that we can avoid such system hang.
>>>
>>> Reported-by: Eric Nelson <e...@nelint.com>
>>> Signed-off-by: Fabio Estevam <fabio.este...@nxp.com>
>>
>> After running more tests I still get the hang sometimes, so we still
>> need to review the DDR SPL settings.
>>
>> Regards,
>>
>> Fabio Estevam
>>
>
> I just test this patch against imx/master and I'm still seeing the
> issue:
>
> root@imx6ulevk:~#
> Bus freq set to 24000000 start...
>
> Do you have kernel debug messages enabled so you can see the bus
> frequency change?
>
Things are working well using your config patch:
http://pastebin.com/crAe1Yr1
root@imx6ulevk:~#
Bus freq set to 24000000 start...
Bus freq set to 24000000 done!
root@imx6ulevk:~#
root@imx6ulevk:~#
Bus freq set to 400000000 start...
Bus freq set to 400000000 done!
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