| Message ID | 1387570867-19445-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h index a3fbc48..31e1715d 100644 --- a/arch/arm/plat-omap/include/plat/dmtimer.h +++ b/arch/arm/plat-omap/include/plat/dmtimer.h @@ -335,8 +335,11 @@ static inline void __omap_dm_timer_enable_posted(struct omap_dm_timer *timer) if (timer->posted) return; - if (timer->errata & OMAP_TIMER_ERRATA_I103_I767) + if (timer->errata & OMAP_TIMER_ERRATA_I103_I767) { + timer->posted = OMAP_TIMER_NONPOSTED; + __omap_dm_timer_write(timer, OMAP_TIMER_IF_CTRL_REG, 0, 0); return; + } __omap_dm_timer_write(timer, OMAP_TIMER_IF_CTRL_REG, OMAP_TIMER_CTRL_POSTED, 0);
This is a note to let you know that I have just added a patch titled ARM: OMAP2+: Disable POSTED mode for errata i103 and i767 to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue This patch is scheduled to be released in version 3.8.13.15. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.8.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 832f8486e8087a057c8fd4729d6004ab6b698446 Mon Sep 17 00:00:00 2001 From: Joel Fernandes <joelf@ti.com> Date: Tue, 26 Nov 2013 15:03:36 -0800 Subject: ARM: OMAP2+: Disable POSTED mode for errata i103 and i767 commit 912e663127c5f700da6805ce21635dce703cb2cc upstream. 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. [1] http://e2e.ti.com/support/arm/sitara_arm/f/791/t/285744.aspx [2] http://e2e.ti.com/support/arm/sitara_arm/f/791/t/270632.aspx [3] http://www.spinics.net/lists/linux-omap/msg81770.html Reported-by: Russ Dill <russ.dill@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- arch/arm/plat-omap/include/plat/dmtimer.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- 1.8.3.2