Re: [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and i767

Joel Fernandes
2013-11-25T22:18:20Z

On 11/25/2013 04:14 PM, Tony Lindgren wrote:
> * Joel Fernandes <joelf@ti.com> [131125 13:46]:
>> Enabling of Posted mode is seen to cause problems on dmtimer modules on AM33xx
>> (much like other OMAPs). Reference discussions on forums [1] [2]. Earlier
>> patch solving this on other OMAPs [3].
>>
>> For OMAP SoCs with this errata, the fix has been to not enable Posted mode.
>> However, on some SoCs (atleast AM33xx) which carry this errata, Posted mode
>> is enabled on reset. So we not only need to ignore enabling of the POSTED bit
>> when the timer is requested, but also disable Posted mode if errata is present.
>
> This could explain some occasional lost timers I saw a while back when
> testing things.. We most likely should merge for the -rc series with cc stable.

Sure, I agree.

>
> Does this depend on the other patches in this series?
>

No it doesn't depend.

thanks,

-Joel