[U-Boot] [PATCH v2 6/6] mx6: soc: Disable VDDPU regulator

Otavio Salvador otavio at ossystems.com.br
Wed Jan 15 18:12:30 CET 2014


Hello,

On Thu, Jan 9, 2014 at 7:31 PM, Stefano Babic <sbabic at denx.de> wrote:
>
> On 09/01/2014 20:11, Otavio Salvador wrote:
>
>> On Thu, Jan 9, 2014 at 5:06 PM, Fabio Estevam <festevam at gmail.com
>> <mailto:festevam at gmail.com>> wrote:
>>
>>     On Thu, Jan 9, 2014 at 3:50 PM, Otavio Salvador
>>     <otavio at ossystems.com.br <mailto:otavio at ossystems.com.br>> wrote:
>>
>>      > It seems this patch makes 3.10.17-1.0.0-beta freeze in a customer
>>     board;
>>      > reverting this makes this to work again. It freezes when loading
>>     Vivante
>>      > module.
>>
>>     VDDPU is needed for using the GPU, so the kernel should turn on the
>>     VDDPU regulator.
>>
>>     Looks like you are getting a kernel bug.
>>
>> It might be but shouldn't we delay this patch for now?
>>
>
> Now or later it does not change. The correct behavior is done with the
> patch, and the kernel must turn power on. If it does not, the patch is
> needed for the kernel, not here.


I've been debugging to make 3.10 to work with this patch, but without
success...

I think this patch should be reverted and be added back to 2014.04 release
so we have more time to debug this.

-- 
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