Thread (2 messages) 2 messages, 1 author, 2015-12-18

[PATCH v4] clocksource: arm_global_timer: fix suspend resume

From: grygorii.strashko@ti.com (Grygorii Strashko)
Date: 2015-12-18 13:15:24
Also in: linux-omap, lkml

Hi All,
On 11/30/2015 08:25 PM, Grygorii Strashko wrote:
Now the System stall is observed on TI AM437x based board
(am437x-gp-evm) during resuming from System suspend when ARM Global
timer is selected as clocksource device (CPUIdle not enabled) - SysRq are working,
but nothing else.

The reason of stall is that ARM Global timer loses its contexts during
System suspend:
    GT_CONTROL.TIMER_ENABLE = 0 (unbanked)
    GT_COUNTERx = 0

Hence, update ARM Global timer driver to reflect above behaviour
- re-enable ARM Global timer on resume (GT_CONTROL.TIMER_ENABLE = 1)
   if not enabled.

CC: Arnd Bergmann <arnd@arndb.de>
Cc: John Stultz <redacted>
Cc: Felipe Balbi <redacted>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Marc Zyngier <redacted>
Reviewed-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Are there any comments? Do I need to perform any additional actions to have it merged?



-- 
regards,
-grygorii
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