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authorVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>2014-02-26 05:38:43 +0530
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-03-05 15:56:54 +1100
commit97eb001f03494758a938300908b88929163650ce (patch)
treea266f44413ae0418c95436e505b7441d041e328e /arch/powerpc/platforms
parentaca79d2b6ec2c0b955b22abb71c6dab90fa1d4d5 (diff)
downloadop-kernel-dev-97eb001f03494758a938300908b88929163650ce.zip
op-kernel-dev-97eb001f03494758a938300908b88929163650ce.tar.gz
powerpc/powernv: Add OPAL call to resync timebase on wakeup
During "Fast-sleep" and deeper power savings state, decrementer and timebase could be stopped making it out of sync with rest of the cores in the system. Add a firmware call to request platform to resync timebase using low level platform methods. Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/powernv/opal-wrappers.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 3e8829c..aab54b6 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -126,6 +126,7 @@ OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
+OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
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