[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
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