[U-Boot] i.MX6 freeze when running Linux FSL 3.10.9-1.0.0-alpha AND U-Boot 2013.10

Otavio Salvador otavio at ossystems.com.br
Wed Nov 27 12:14:21 CET 2013


On Wed, Nov 27, 2013 at 4:40 AM, Wolfgang Denk <wd at denx.de> wrote:
> Dear Otavio Salvador,
>
> In message <CAP9ODKqBwH+LfhTcPMBn1ppUtfpfUnUyyN8CTi=akwja1ka6Qg at mail.gmail.com> you wrote:
>>
>> > Do I understand correctly that this happens only with the FSL kernel,
>> > i. e. not with mainline Linux?
>>
>> Exactly.
>>
>> > What exactly is the effect of calling your set_anatop_bypass()
>> > function?  Why would that be needed on the FSL kernel, and not on
>> > mainline?
>>
>> Mainline seems to not drive the pmic while the FSL kernel does. So it
>> seems we ought to bypass the internal LDO.
>
> Or rather fix the FSL kernel?

I am not sure the kernel is wrong here.

As I said in previous message, the mainline kernel does not drive the
PMIC and the power sources are the internal LDO. The FSL kernel
changes the power sources to the ones from the PMIC (which makes
sense) but in the end it depends on U-Boot have done it too.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750


More information about the U-Boot mailing list