All of lore.kernel.org
 help / color / mirror / Atom feed
From: Tony Lindgren <tony@atomide.com>
To: Keerthy <j-keerthy@ti.com>
Cc: t-kristo@ti.com, linux@armlinux.org.uk,
	linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Grygorii Strashko <grygorii.strashko@ti.com>,
	Lokesh Vutla <lokeshvutla@ti.com>
Subject: Re: [PATCH v2] ARM: omap2: am437x: rollback to use omap3_gptimer_timer_init()
Date: Tue, 27 Dec 2016 09:35:49 -0800	[thread overview]
Message-ID: <20161227173549.GS4920@atomide.com> (raw)
In-Reply-To: <1480910264-5126-1-git-send-email-j-keerthy@ti.com>

* Keerthy <j-keerthy@ti.com> [161204 19:58]:
> From: Grygorii Strashko <grygorii.strashko@ti.com>
> 
> The commit 55ee7017ee31 ("arm: omap2: board-generic: use
> omap4_local_timer_init for AM437x") unintentionally changes the
> clocksource devices for AM437x from OMAP GP Timer to SyncTimer32K.
> 
> Unfortunately, the SyncTimer32K is starving from frequency deviation
> as mentioned in commit 5b5c01359152 ("ARM: OMAP2+: AM43x: Use gptimer
> as clocksource") and, as reported by Franklin [1], even its monotonic
> nature is under question (most probably there is a HW issue, but it's
> still under investigation).
> 
> Taking into account above facts It's reasonable to rollback to the use
> of omap3_gptimer_timer_init().
> 
> [1] http://www.spinics.net/lists/linux-omap/msg127425.html

Applying into omap-for-v4.10/fixes thanks.

Tony

WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: omap2: am437x: rollback to use omap3_gptimer_timer_init()
Date: Tue, 27 Dec 2016 09:35:49 -0800	[thread overview]
Message-ID: <20161227173549.GS4920@atomide.com> (raw)
In-Reply-To: <1480910264-5126-1-git-send-email-j-keerthy@ti.com>

* Keerthy <j-keerthy@ti.com> [161204 19:58]:
> From: Grygorii Strashko <grygorii.strashko@ti.com>
> 
> The commit 55ee7017ee31 ("arm: omap2: board-generic: use
> omap4_local_timer_init for AM437x") unintentionally changes the
> clocksource devices for AM437x from OMAP GP Timer to SyncTimer32K.
> 
> Unfortunately, the SyncTimer32K is starving from frequency deviation
> as mentioned in commit 5b5c01359152 ("ARM: OMAP2+: AM43x: Use gptimer
> as clocksource") and, as reported by Franklin [1], even its monotonic
> nature is under question (most probably there is a HW issue, but it's
> still under investigation).
> 
> Taking into account above facts It's reasonable to rollback to the use
> of omap3_gptimer_timer_init().
> 
> [1] http://www.spinics.net/lists/linux-omap/msg127425.html

Applying into omap-for-v4.10/fixes thanks.

Tony

  reply	other threads:[~2016-12-27 17:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-05  3:57 [PATCH v2] ARM: omap2: am437x: rollback to use omap3_gptimer_timer_init() Keerthy
2016-12-05  3:57 ` Keerthy
2016-12-05  3:57 ` Keerthy
2016-12-27 17:35 ` Tony Lindgren [this message]
2016-12-27 17:35   ` Tony Lindgren

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=20161227173549.GS4920@atomide.com \
    --to=tony@atomide.com \
    --cc=grygorii.strashko@ti.com \
    --cc=j-keerthy@ti.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-omap@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=lokeshvutla@ti.com \
    --cc=t-kristo@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.