From: Tony Lindgren <tony@atomide.com>
To: Joel Fernandes <joelf@ti.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: Tue, 26 Nov 2013 14:05:43 -0800 [thread overview]
Message-ID: <20131126220543.GP26766@atomide.com> (raw)
In-Reply-To: <5293CC93.6040603@ti.com>
* Joel Fernandes <joelf@ti.com> [131125 14:18]:
> 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.
OK thanks applying into omap-for-v3.13/fixes-take4.
Tony
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and i767
Date: Tue, 26 Nov 2013 14:05:43 -0800 [thread overview]
Message-ID: <20131126220543.GP26766@atomide.com> (raw)
In-Reply-To: <5293CC93.6040603@ti.com>
* Joel Fernandes <joelf@ti.com> [131125 14:18]:
> 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.
OK thanks applying into omap-for-v3.13/fixes-take4.
Tony
next prev parent reply other threads:[~2013-11-26 22:05 UTC|newest]
Thread overview: 41+ 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 ` Joel Fernandes
2013-11-25 21:44 ` 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 ` Joel Fernandes
2013-11-25 21:44 ` 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 ` Joel Fernandes
2013-11-25 21:44 ` 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 ` Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 21:44 ` [PATCH 4/7] ARM: OMAP4: " Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 21:44 ` [PATCH 5/7] ARM: OMAP4: hwmod: add hwmod data for DES IP Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 22:11 ` Tony Lindgren
2013-11-25 22:11 ` Tony Lindgren
2013-11-25 22:25 ` Joel Fernandes
2013-11-25 22:25 ` Joel Fernandes
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 21:44 ` Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 22:14 ` Tony Lindgren
2013-11-25 22:14 ` Tony Lindgren
2013-11-25 22:17 ` Joel Fernandes
2013-11-25 22:17 ` Joel Fernandes
2013-11-25 22:17 ` Joel Fernandes
2013-11-26 22:05 ` Tony Lindgren [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 21:44 ` Joel Fernandes
2013-11-25 21:44 ` Joel Fernandes
2013-11-25 22:12 ` [PATCH 0/7] AES/DES hwmod data and dmtimer fix Tony Lindgren
2013-11-25 22:12 ` Tony Lindgren
2013-11-25 22:24 ` Joel Fernandes
2013-11-25 22:24 ` Joel Fernandes
2013-11-25 22:24 ` Joel Fernandes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131126220543.GP26766@atomide.com \
--to=tony@atomide.com \
--cc=joelf@ti.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=santosh.shilimkar@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.