This is a note to let you know that I've just added the patch titled
ARM: OMAP2+: timer: add probe for clocksources
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-omap2-timer-add-probe-for-clocksources.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 970f9091d25df14e9540ec7ff48a2f709e284cd1 Mon Sep 17 00:00:00 2001
From: Tero Kristo <t-kristo@xxxxxx>
Date: Thu, 16 Jun 2016 15:25:18 +0300
Subject: ARM: OMAP2+: timer: add probe for clocksources
From: Tero Kristo <t-kristo@xxxxxx>
commit 970f9091d25df14e9540ec7ff48a2f709e284cd1 upstream.
A few platforms are currently missing clocksource_probe() completely
in their time_init functionality. On OMAP3430 for example, this is
causing cpuidle to be pretty much dead, as the counter32k is not
going to be registered and instead a gptimer is used as a clocksource.
This will tick in periodic mode, preventing any deeper idle states.
While here, also drop one unnecessary check for populated DT before
existing clocksource_probe() call.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Julia Lawall <julia.lawall@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-omap2/timer.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -496,8 +496,7 @@ void __init omap_init_time(void)
__omap_sync32k_timer_init(1, "timer_32k_ck", "ti,timer-alwon",
2, "timer_sys_ck", NULL, false);
- if (of_have_populated_dt())
- clocksource_probe();
+ clocksource_probe();
}
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM43XX)
@@ -505,6 +504,8 @@ void __init omap3_secure_sync32k_timer_i
{
__omap_sync32k_timer_init(12, "secure_32k_fck", "ti,timer-secure",
2, "timer_sys_ck", NULL, false);
+
+ clocksource_probe();
}
#endif /* CONFIG_ARCH_OMAP3 */
@@ -513,6 +514,8 @@ void __init omap3_gptimer_timer_init(voi
{
__omap_sync32k_timer_init(2, "timer_sys_ck", NULL,
1, "timer_sys_ck", "ti,timer-alwon", true);
+
+ clocksource_probe();
}
#endif
Patches currently in stable-queue which might be from t-kristo@xxxxxx are
queue-4.4/arm-omap2-timer-add-probe-for-clocksources.patch