[U-Boot] [PATCH] mx6: Revert "mx6: soc: Disable VDDPU regulator"
Stefano Babic
sbabic at denx.de
Thu Jan 16 17:08:30 CET 2014
Hi Fabio,
On 16/01/2014 17:01, Fabio Estevam wrote:
> On Thu, Jan 16, 2014 at 1:50 PM, Otavio Salvador
> <otavio at ossystems.com.br> wrote:
>
>>> It worked for you probably because you used the ldo bypass mode.
>>
>>
>> Yes; I did the bypass mode.
>
> We currently don't do LDO bypass mode in mainline U-boot. We do it in
> FSL U-boot.
>
> With LDO bypass, lower VDDARM and VDDSOC voltages can be supplied as
> per the mx6 datasheet.
>
> I just measured with the scope and the VDDARM/SOC voltages supplied by
> the 3.10 FSL kernel are below the minimum for the LDO enabled case. So
> setting LDO bypass in U-boot 'fixes' the issue.
>
> We can implement LDO bypass after 2014.01 is out, but for this release
> let's just revert the VDDPU disable patch.
>
> Do you agree?
>
+1
Best regards,
Stefano Babic
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