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author | Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com> | 2016-06-17 09:51:50 +0530 |
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committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2016-06-20 14:32:47 +1000 |
commit | b6f940fbb83ab27fb5f9bb59f52b685709def93c (patch) | |
tree | 9c6a54a4f184e95785cd472f845740bf36ed2a59 /hw | |
parent | 04674d31b6a0f701c12be9585c106da41e24e444 (diff) | |
download | skiboot-b6f940fbb83ab27fb5f9bb59f52b685709def93c.zip skiboot-b6f940fbb83ab27fb5f9bb59f52b685709def93c.tar.gz skiboot-b6f940fbb83ab27fb5f9bb59f52b685709def93c.tar.bz2 |
slw: Allow adding idle states to power-mgt node in mambo
This patch removes the check which prevents adding any idle state to
"power-mgt" node in mambo.
Power8 exposes 3 idle states- nap, fast-sleep and deep-winkle.
While fast-sleep depends on SCOMs and deep-winkle depends on SCOMs/SLW,
nap has no such dependencies and it can be enabled in mambo. Current code
checks for "fast-sleep" in hostboot provided
"ibm,enabled-idle-states" dt node for adding fast-sleep and checks
for presence of SLW for adding winkle to "power-mgt". Hence with this
change only nap will be added to "power-mgt" node in mambo on Power8.
On Power9, this patch enables all idle states which don't need SLW.
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/slw.c | 6 |
1 files changed, 0 insertions, 6 deletions
@@ -594,12 +594,6 @@ void add_cpu_idle_state_properties(void) return; } - /* Mambo currently misbehaves in nap mode vs. timebase, so let's - * disable idle states - */ - if (chip_quirk(QUIRK_DISABLE_NAP)) - return; - /* * Chose the right state table for the chip * |