From: Joel Fernandes <joelf@ti.com>
To: Tony Lindgren <tony@atomide.com>
Cc: Linux ARM Kernel List <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Santosh Shilimkar <santosh.shilimkar@ti.com>
Subject: Re: [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and i767
Date: Mon, 25 Nov 2013 16:17:55 -0600 [thread overview]
Message-ID: <5293CC93.6040603@ti.com> (raw)
In-Reply-To: <20131125221437.GW10023@atomide.com>
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
next prev parent reply other threads:[~2013-11-25 22:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-25 21:44 [PATCH 0/7] AES/DES hwmod data and dmtimer fix Joel Fernandes
2013-11-25 21:44 ` [PATCH 1/7] ARM: OMAP: hwmod: Add SYSC offsets for AES IP Joel Fernandes
2013-11-25 21:44 ` [PATCH 2/7] ARM: DRA7xx: hwmod: Add hwmod data for DES IP Joel Fernandes
2013-11-25 21:44 ` [PATCH 3/7] ARM: DRA7xx: hwmod: Add hwmod data for AES IP Joel Fernandes
2013-11-25 21:44 ` [PATCH 4/7] ARM: OMAP4: " Joel Fernandes
2013-11-25 21:44 ` [PATCH 5/7] ARM: OMAP4: hwmod: add hwmod data for DES IP Joel Fernandes
2013-11-25 22:11 ` Tony Lindgren
2013-11-25 22:25 ` Joel Fernandes
2013-11-25 21:44 ` [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and i767 Joel Fernandes
2013-11-25 22:14 ` Tony Lindgren
2013-11-25 22:17 ` Joel Fernandes [this message]
2013-11-26 22:05 ` Tony Lindgren
2013-11-25 21:44 ` [PATCH 7/7] OMAP: AM33xx: hwmod: Correct AES module SYSC type Joel Fernandes
2013-11-25 22:12 ` [PATCH 0/7] AES/DES hwmod data and dmtimer fix Tony Lindgren
2013-11-25 22:24 ` Joel Fernandes
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