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path: root/arch/arm/mach-tegra/cpu-tegra3.c
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2012-08-14ARM: tegra: Ignore PmQos when disabledSai Charan Gurrappadi
The cpu hotplug drivers should only bother updating state or switching to the G cluster if the driver is not disabled Bug 1032096 Change-Id: Ice938b094bbf48fef47afa3915b1a48362fb256d Signed-off-by: Sai Charan Gurrappadi <sgurrappadi@nvidia.com> Reviewed-on: http://git-master/r/122859 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
2012-08-01Revert "Modified the hot-plug governor down_delay to be 500ms instead of 2s"naveenk
This is required as it is causing performance regression for SD, eMMC and USB Bug 1006055 Bug 1021754 This reverts commit 2f5a59bbeee465fb33d012b8dc714fa0c1637209. Change-Id: Ie54c28859ead976b5c554191d42eb22569370063 Signed-off-by: naveen kumar arepalli <naveenk@nvidia.com> Reviewed-on: http://git-master/r/118575 Reviewed-by: Simone Willett <swillett@nvidia.com> Tested-by: Simone Willett <swillett@nvidia.com>
2012-07-30ARM: tegra: Add profile that disables runnable threadsXiao Bo Zhao
Add profile [0, 0, 0] which effectively disables runnable threads Bug 1003531 Change-Id: Ia45e533d5a6531b06c44c6d95f2f7cfd93cf976e Signed-off-by: Xiao Bo Zhao <xiaoboz@nvidia.com> Reviewed-on: http://git-master/r/118219 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
2012-07-30arm: tegra: Added sysfs knobs for RT thresholdsXiao Bo Zhao
Added different bias levels to RT and added the option to modify the bias level through sysfs knobs Bug 1003531 Reviewed-on: http://git-master/r/114271 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Tested-by: Xiao Bo Zhao <xiaoboz@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> (cherry picked from commit 654bc674034f384d8826806fb443d4e9c67b9b3b) Change-Id: I2e647a65fb89926dd9f0b2ac3edc3dca8eb659a1 Reviewed-on: http://git-master/r/118201 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Xiao Bo Zhao <xiaoboz@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2012-07-01arm: tegra: modify hotplug balance thresholdXiao Bo Zhao
Tuned the sensitivity level of the hot-plug governor's balancing algorithm to 60% from 75% Bug 958978 Change-Id: I972ed908995e348e8b3b0afb8108c44b66c80eae Signed-off-by: Wen Yi <wyi@nvidia.com> (cherry picked from commit 07a69db5af4c971b2c2d161ee149580ab5b40633) Reviewed-on: http://git-master/r/111641 Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Tested-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-07-01arm: tegra: hotplug: modify down_delayXiao Bo Zhao
Modified the hot-plug governor down_delay to be 500ms instead of 2s Bug 958978 Change-Id: I55b5a4994f8e4564879cfd206fc683ff6f32d9ac Signed-off-by: Wen Yi <wyi@nvidia.com> (cherry picked from commit dd477396f2762f871255fb9d0800431d7534754d) Reviewed-on: http://git-master/r/111640 Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Tested-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-07-01arm: tegra: hotplug: tune runnable thread params.Xiao Bo Zhao
Tuned the runnable threads threshold from 5/9/13 to 5/9/10 in order to improve performance Bug 958978 Change-Id: I77abcd0077845517f2b5f7487c547f8a5157c2c7 Signed-off-by: Wen Yi <wyi@nvidia.com> (cherry picked from commit 25a97f57661353fbb5ee40faed296befbf635178) Reviewed-on: http://git-master/r/111639 Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Tested-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-07-01ARM: tegra: power: Use runnable threads average for hotplugWen Yi
Sample scheduler runnable threads average in auto-hotplug work function and use it to determine the auto-hotplug target for number of on-line cores. Use cpu up delay as sampling period, and enforce down delay by checking last cpu configuration change time stamp. Bug 958978 Change-Id: I4280a11d39914687e6ffaa6f38df594d10aedaa9 Signed-off-by: Alex Frid <afrid@nvidia.com> (cherry picked from commit 507e2ef5e4f09b23de2e924003dba259d3c8bc3c) Reviewed-on: http://git-master/r/111638 Reviewed-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Tested-by: Sai Gurrappadi <sgurrappadi@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-06-04arm: tegra: resolve compilation time warningsSanjay Singh Rawat
Bug 949219 Change-Id: I91a67d30869e9800c483f112d58b9f76e2dbe361 Signed-off-by: Sanjay Singh Rawat <srawat@nvidia.com> Reviewed-on: http://git-master/r/103534 Reviewed-by: Simone Willett <swillett@nvidia.com> Tested-by: Simone Willett <swillett@nvidia.com>
2012-05-31ARM: tegra: power: Go to G-CPU if minimum 1 is requestedAlex Frid
On Tegra3 switch and stay on G-CPU if minimum 1 is requested via PM QoS interface. Allow return to LP-CPU only if request is at default 0 level. Change-Id: Ie1a732fe6c6a1dcd2f7e78be01e32dcc5a7993a6 Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/102120 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Donghan Ryu <dryu@nvidia.com> Reviewed-by: Satya Popuri <spopuri@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-05-17ARM: tegra: power: Don't enable auto-hotplug as PM QoS side-effectAlex Frid
On Tegra3, if PM QoS hotplug request is received when auto-hotplug is disabled, do not enable auto-hotplug as side effect of the request. Change-Id: I8928d9ecd22e2d2df5fe60274fed30da0c565b47 Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/102118 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Donghan Ryu <dryu@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
2012-05-09ARM: tegra: power: Apply down delay to balancing CPUsAlex Frid
On Tegra3 secondary G-CPU may be turned off by auto-hotplug governor in two cases: when overall CPU load is low enough to justify transition to LP CPU, or when CPU cores usage by the scheduler is unbalanced (skewed). In the former case down delay (currently 2sec) was inserted before the core is turned Off. In the latter case the up delay (100ms) was used, i.e., the same delay applied to balancing cores regardless of the On/Off direction. This commit would apply down delay when turning core Off in both cases above, and keep using up delay only for turning core On. Change-Id: Id545f8d48cbf380e24824a5adfe045ff68c1f39c Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/99708 Reviewed-by: Rohan Somvanshi <rsomvanshi@nvidia.com> Tested-by: Rohan Somvanshi <rsomvanshi@nvidia.com>
2012-05-03ARM: tegra: power: Enforce CPU rate range in min cpu notifierAlex Frid
On Tegra3 make sure cpu rate is within G-mode range before LP to G mode switch triggered by minimum CPUs notifier. Bug 964208 Change-Id: Ic4ee6bc7eca5ad0902da4907e4702f296a155280 Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/99834 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2012-04-12ARM: tegra: power: Cancel hotplug work upon disableAntti P Miettinen
Cancel hotplug work when auto hotplug gets disabled to prevent e.g. cpu_up() getting called in LP cluster. Bug 965777 Change-Id: I058fe6a5e0c2fd3203ce9bc951d0973b60e033e0 Signed-off-by: Antti P Miettinen <amiettinen@nvidia.com> Reviewed-on: http://git-master/r/95076 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Juha Tukkinen <jtukkinen@nvidia.com>
2012-03-14ARM: tegra: power: Use CPU G mode in suspend prepareAlex Frid
Switch to CPU G mode in Tegra3 suspend prepare if CPU suspend rate is high enough. By symmetry, it guarantees that device resume will be happening in G mode as well. Bug 946301 Signed-off-by: Alex Frid <afrid@nvidia.com> (cherry picked from commit 082be3604056c39442e1b42f5cfceeb089ffdaae) Change-Id: I42e37ce8847e4916dd0fca9e4bd44096b65f7032 Reviewed-on: http://git-master/r/89352 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2012-03-08ARM: tegra: power: Trim Tegra3 hotplug timingsDiwakar Tundlam
Bug 945921 Reduce delays in going LP->G and G->Gn (cherry picked from commit 51b7022f328d955cc4dbbf47b35403ea9c5e3a7b) Signed-off-by: Diwakar Tundlam <dtundlam@nvidia.com> Change-Id: I10f68196cb64ea20461000e9b0d64999fd714395 Reviewed-on: http://git-master/r/88169 Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Diwakar Tundlam <dtundlam@nvidia.com>
2012-02-28ARM: tegra: power: Support minimum on-line cpus limitAlex Frid
Updated Tegra3 auto-hotplug mechanism to keep minimum number of on-line cpus above the limit specified by the PM QoS parameter PM_QOS_MIN_ONLINE_CPUS. Added respective debugfs node /kernel/debug/tegra_hotplug/min_cpus. Bug 940061 Change-Id: Ic7d2e0fdb334661d46c9cd3ce0c73ae662ca3722 Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/84707 Reviewed-by: Donghan Ryu <dryu@nvidia.com> Tested-by: Gaurav Sarode <gsarode@nvidia.com> Reviewed-by: Sachin Nikam <snikam@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
2011-12-30ARM: tegra: power: Update Tegra3 auto-hotplug statesAlex Frid
Updated Tegra3 auto-hotplug state machine: - no longer enter down state on LP CPU (there is no down path on LP) - no longer enter idle state on G CPU (since load distribution between G cores may change without CPU frequency change, continue polling) - allow only disabled or idle state to be set via auto-hotplug sysfs node, and synchronize with cpufreq governor in the latter case Change-Id: Ibb93ddca852bbe1341fc5c52b0c83c16e9963e9d Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/71584 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Wen Yi <wyi@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
2011-12-22ARM: tegra: power: Limit maximum online cpus numberAlex Frid
Updated Tegra3 auto-hotplug mechanism to keep maximum number of online cpus within the limit specified by the PM QoS parameter PM_QOS_MAX_ONLINE_CPUS. Added respective debugfs node /kernel/debug/tegra_hotplug/max_cpus. Bug 894200 Change-Id: I278cbfd91a1760b282eab186aa21883918b13800 Signed-off-by: Alex Frid <afrid@nvidia.com> Reviewed-on: http://git-master/r/71035 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Antti Miettinen <amiettinen@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com>
2011-11-30ARM: tegra: power: Update CPU rate after mode switchAlex Frid
Update Tegra3 CPU clock rate after G=>LP mode switch is completed to synchronize with cpufreq target rate. (cherry picked from commit 870d21e5e23eff476cdd841b4ce2605393d638ef) (cherry picked from commit 11b20d7d6206c557f00e3f7a40dec1d498345d79) Change-Id: I62237b8d34be23a8d903937f2ebb2d395c5db1b9 Reviewed-on: http://git-master/r/63359 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Rebase-Id: Rdd1548389896521fddb2e239d6236706eb102f73
2011-11-30ARM: tegra: power: Tune Tegra3 hotplug algorithmAlex Frid
- Account for EDP affect on total available MIPS when bringing on-line (removing off-line) new cpu core. Add multi-core overhead (in percent) as a parameter - set by default to 10%. - Add balance level parameter: level value (in percent) defines minimum speed ratio used by hotplug algorithm to determine if current CPU cores are balanced, so that another core may be brought on-line. By default set to 75% Added tunables: /sys/module/cpu_tegra3/parameters/mp_overhead /sys/module/cpu_tegra3/parameters/balance_level Bug 865176 Bug 867186 Original-Change-Id: I6f2e175e0b5ed14c4b85794949c1e65d0e7f4a36 Reviewed-on: http://git-master/r/49772 Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Tested-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Rebase-Id: Rcfefb570c30bf78f6eae155c3f3f7547ac64f128
2011-11-30ARM: tegra: power: Re-factor power headers.Alex Frid
Renamed and moved tegra cpu related function prototypes from power.h to tegra-cpu.h. No functional changes. Original-Change-Id: I24c25c9434bf7008e0875d1f74be502cd902c4ba Reviewed-on: http://git-master/r/40532 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Rebase-Id: R3d90799453a86a5a9ed012d2bfe373715de6d5c3
2011-11-30ARM: tegra: workqueue: Unify spelling of 'freeze'+'able' to 'freezable'Gaurav Sarode
In K39 , 'freezeable' is changed to 'freezable'. Reference Commit Id 58a69cb47ec6991bf006a3e5d202e8571b0327a4. Change-Id: Ie3f95db453205c05da4cf4e655ba8b12a126255b Reviewed-on: http://git-master/r/47487 Tested-by: Gaurav Sarode <gsarode@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Rebase-Id: R530643b91e8c252eb606ce7e789cfe34101f6edd
2011-11-30ARM: tegra: power: Idle Tegra3 auto-hoplug on suspend entryAlex Frid
Original-Change-Id: I7f4fb6447c882a54d95ee3fb4c6149f4e0357d69 Reviewed-on: http://git-master/r/31457 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Narendra Damahe <ndamahe@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Gerrit_Virtual_Submit Rebase-Id: Rbe2ac5f11065109d34a04793f93c873441e261be
2011-11-30ARM: tegra: clock: Clip Tegra3 CPU mode rate limitsAlex Frid
Made sure Tegra3 LP CPU mode maximum rate, and G CPU mode minimum rate are clipped to the entries in cpufreq scaling table. Original-Change-Id: I4c82b65be3a8680edbb501041a7158d1a7fbbd07 Reviewed-on: http://git-master/r/29703 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Rebase-Id: R99b548e992c80e4850e6d7f9443db8f7d7134956
2011-11-30ARM: tegra: power: Check Tegra3 auto-hotplug speed balanceAlex Frid
When current CPU complex frequency is above target range: - bring new core on-line only if cpufreq governor requests for all already on-lined CPUs are above 50% of current CPU frequency - off-line one core (despite high pick request) if cpufreq governor requests for at least 2 on-lined CPUs are below 25% of current CPU frequency - do nothing if neither of the above conditions is true Original-Change-Id: I77e1bd543a8fadd51974f7d574f256a6e7e2979a Reviewed-on: http://git-master/r/29702 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Rebase-Id: Rc5c717454d1e09ca97ccc79fff60cb33fcf854e9
2011-11-30ARM: tegra: power: Update Tegra3 CPU auto-hotplugAlex Frid
- taking CPU core off-line: selected CPU with minimum load - switching from ULP to G CPU mode: set CPU clock to cpufreq target rate after the mode switch is completed Original-Change-Id: I9bf4d0f4b48c262cf678c603aac02043dd602674 Reviewed-on: http://git-master/r/28420 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Original-Change-Id: I5a19be79dd8f8fe788637870a22cd34dcfea150e Rebase-Id: Re264ec676c5c2103f7738c9eab5f4e11a4344975
2011-11-30ARM: tegra: power: Modify auto-hotplug lockingAlex Frid
Use cpufreq (cpu DFS) mutex for auto-hotplug (instead of a separate one) to serialize cpu frequency scaling, hotplug, and CPU mode switch operations. Original-Change-Id: I7ea865894d1676c865294ab31a903248d9437534 Reviewed-on: http://git-master/r/24893 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I906a23561c1567079a41590a30b29b3d52fa5de8 Rebase-Id: R5d16154c91b41fd02f2a50af7ec6868a7958dc13
2011-11-30ARM: tegra: clock: Re-factor Tegra3 cpu clocksAlex Frid
Added second level virtualization (on top of virtual cpu rate control) to support different Tegra3 CPU power modes: low power (LP) mode and geared performance (G) mode. Virtual cpu complex (cpu_cmplx) clock is defined as a child with two parents: virtual cpu_lp and virtual cpu_g clocks for the respective modes. Mode switch sequence was integrated into cpu_cmplx set parent implementation. (Before this commit mode switch was triggered outside the clock framework, which created cpu clock/mode synchronization problems). Each mode clock is derived from its own super clock mux (cclk_lp and cclk_g) to statically match Tegra3 h/w layout. (Before this commit the code had to dynamically synchronize CPU mode and active mux selection). This change also allowed to support PLLX output divider for low power mode as fixed 1:2 divider with bypass control embedded into cclk_lp parent section. Updated auto and sysfs CPU mode switch calls to use new clock framework, and removed clock manipulation from the low level mode switch implementation. Original-Change-Id: Ibc3cc495b2ff29e2d3417eff2bfd45535cbd015b Reviewed-on: http://git-master/r/24734 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Jin Qian <jqian@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I23ae80edbf14fb22727a6fc317cd9e5baf8bd6be Rebase-Id: Rdcd4a2165ebd92bf4caa35d68ca81d19a3789351
2011-11-30ARM: tegra: cpu: Add CPU ULP mode debug controlAlex Frid
Original-Change-Id: I30e6b308e6c04e4dcb914057284a949ad255d32f Reviewed-on: http://git-master/r/22708 Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Kaz Fukuoka <kfukuoka@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Original-Change-Id: I2d221d49aa98d407a18c9d2eb0f5658f56920cbc Rebase-Id: R84fbe564a1624e2261b4b0623a5fa9d810c1d956
2011-11-30ARM: tegra: cpu: Auto-hotplug stats controlAlex Frid
Do not update auto-hotplug statistic when auto-hotplug is disabled; initialize and restart updating after it is enabled. Original-Change-Id: I3a202ab3f0d3d194207e1e881248edac1f820802 Reviewed-on: http://git-master/r/20229 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Original-Change-Id: Iabc61ecd866b421d7cd819d420051ada83c97b87 Rebase-Id: Rc8e222d920642c2c61587290c8542c69538354a8
2011-11-30ARM: tegra: cpu: Update auto-hotplug policyAlex Frid
Do not switch to G cluster if cpufreq spikes above LP frequency limit for a short time - currently set threshold to 100ms. Fixed timing update for LP cluster statistic. Original-Change-Id: Id4f00fd5c39d7fe2aa931da30cf607a5144dc3ab Reviewed-on: http://git-master/r/19381 Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Original-Change-Id: Ief6d391a5806d6cba20b6b5b407acb9846725260 Rebase-Id: Ref560d34203900e32b63d5b6104cb0fb105e4c63
2011-11-30arm: tegra: Fix initial boot to LP clusterScott Williams
Forbid cluster switch to G cluster if the G cluster doesn't exist. Bug 791057 Original-Change-Id: I215de2581edf5fb3c1feaa00d1c6e0b52b15dc23 Reviewed-on: http://git-master/r/19302 Tested-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: Id0a7e5ad62df4d1638518fe00715aac60e4efea9 Rebase-Id: Re39a0fedb7bb0e2518cfd56d46c6565d4a6c2ef4
2011-11-30ARM: tegra: cpu: Add Tegra3 auto-hotplug statisticAlex Frid
Add auto-hotplug statistic to track number of transitions and on-line time for each CPU/cluster. Original-Change-Id: Iefaf4f69068401eb7a9d4abbf725df4e21d35db9 Reviewed-on: http://git-master/r/19168 Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Narendra Damahe <ndamahe@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I62209733054dddbc18741b7fca0c481c90f3aba7 Rebase-Id: R3ef66d1e09da307a7aac93082692d8ee27075299
2011-11-30ARM: tegra: Add auto-hotplug support for Tegra3Alex Frid
Initial implementation of Tegra3 quad core CPU management. Add closed control loop on top of cpufreq DFS. Target frequency range is bounded by Fmax(Vnominal) for low power cluster - currently set to 456MHz, and Fmax(Vminimum) for high power cluster - currently set to 356MHz. When CPU frequency is scaled below the target range, slave high power CPUs are gradually brought down and eventually CPU is switched to the low power cluster. When CPU frequency is scaled above the target range, CPU is switched to the high power cluster and slave high power CPUs are gradually brought up. The auto hotplug support is disabled on boot. It can be explicitly enabled via sysfs interface. Original-Change-Id: Ie0e5cf1f334d9c53932db05950cfcf5addd271d7 Reviewed-on: http://git-master/r/18500 Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Tested-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Jonathan Mayo <jmayo@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I86152069aa2bed73e0148a4bcab897811e1a5827 Rebase-Id: R9cf5f5f8868c659db526cb49ddf276a79d93ef1a
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