From mboxrd@z Thu Jan  1 00:00:00 1970
From: joelf@ti.com (Joel Fernandes)
Date: Mon, 25 Nov 2013 16:17:55 -0600
Subject: [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and
 i767
In-Reply-To: <20131125221437.GW10023@atomide.com>
References: <1385415876-12387-1-git-send-email-joelf@ti.com>
 <1385415876-12387-7-git-send-email-joelf@ti.com>
 <20131125221437.GW10023@atomide.com>
Message-ID: <5293CC93.6040603@ti.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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