Re: [PATCH 0/7] ARM: OMAP2+: hwmod/timer: first set of cleanups for 3.4

["Cousson, Benoit" <b-cousson@ti.com>]

On 1/31/2012 9:14 AM, Paul Walmsley wrote:
> Hi
>
> On Tue, 31 Jan 2012, Cousson, Benoit wrote:
>
>> Thanks to the L3 log error:
>> [    0.838439] L3 custom error: MASTER:DucatiM3 TARGET:GPMC
>>
>> I guess that I understand why I was not releasing the hardreset at boot time
>> before:-)
>>
>> DSP and CortexM3 cannot be released from reset until someone loaded a firmware
>> in memory. Otherwise they will start executing some random instructions that
>> in this case are trying to access an area that is not accessible.
>>
>> We have to let the driver handle the hardreset because it is mainly used for
>> processors.
>
> Currently we're not asserting hardreset in the hwmod code during _reset().

Ooops, you're right we were talking about asserting the reset not 
de-asserting it.

> I had that patch in the series at some point, but took it out before
> posting it.  So maybe that might resolve this particular issue.  Also
> sounds like we should make sure that we keep the processor IPs in
> hardreset until some driver explicitly releases it; we'll need to make
> sure the code does that too.

So maybe in that case, this is because the reset line is already 
de-asserted by the fast boot and by enabling the clock we start 
executing some random code in the CortexM3... but this is still weird 
that this error was not happening before.

Regards,
Benoit