[PATCH 1/2] ARM: dts: imx6q-cm-fx6: fix the operation points

Christopher Spinrath christopher.spinrath at rwth-aachen.de
Sun Jun 12 08:17:07 PDT 2016


Hi Fabio,

On 06/12/2016 04:36 PM, Fabio Estevam wrote:
> On Sun, Jun 12, 2016 at 11:05 AM, Christopher Spinrath
> <christopher.spinrath at rwth-aachen.de> wrote:
> 
>> Well, without this patch the SoC runs at 1.2GHz so it seems like the
>> fuse indicates that it is possible. But with a fair amount of IPs
>> enabled and high load the board becomes unstable (display
>> flickering/blanks, ethernet package drops, ...). I guess CompuLab
>> allowed 1.2GHz at first and then realized that it is a bad idea (at
>> least for some boards).
>>
>> Is there any way to influence the fuse (e.g. from the
>> firmware/bootloader) or do you have another proposal on how to fix this
>> issue?
> 
> Ok, understood. So the mx6q fuse indicates that 1.2GHz operation is
> possible on , but the board itself does not behave nicely at this
> frequency.
> 
> Maybe you could send a v2 of this patch that matches the operating
> points form mx6qdl.dtsi and remove only the 1.2GHz entry and put the
> explanation you gave us here in the dts and commit log.
> 

Will do.

Thanks,
Christopher

> Regards,
> 
> Fabio Estevam
> 



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