- 01 9月, 2015 1 次提交
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由 Pi-Cheng Chen 提交于
Mediatek MT8173 is an ARMv8 based quad-core (2*Cortex-A53 and 2*Cortex-A72) SoC with duall clusters. For each cluster, two voltage inputs, Vproc and Vsram are supplied by two regulators. For the big cluster, two regulators come from different PMICs. In this case, when scaling voltage inputs of the cluster, the voltages of two regulator inputs need to be controlled by software explicitly under the SoC specific limitation: 100mV < Vsram - Vproc < 200mV which is called 'voltage tracking' mechanism. And when scaling the frequency of cluster clock input, the input MUX need to be parented to another "intermediate" stable PLL first and reparented to the original PLL once the original PLL is stable at the target frequency. This patch implements those mechanisms to enable CPU DVFS support for Mediatek MT8173 SoC. Signed-off-by: NPi-Cheng Chen <pi-cheng.chen@linaro.org> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 21 6月, 2015 1 次提交
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由 Thomas Abraham 提交于
Exynos4210 based platforms have switched over to use generic cpufreq driver for cpufreq functionality. So the Exynos specific cpufreq support for these platforms can be removed. Changes by Bartlomiej: - dropped Exynos5250 support removal for now - updated exynos-cpufreq.[c,h] Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NThomas Abraham <thomas.ab@samsung.com> Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: NMichael Turquette <mturquette@baylibre.com>
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- 02 4月, 2015 1 次提交
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由 Leo Yan 提交于
Add acpu driver for hisilicon SoC, acpu is application processor subsystem. Currently the acpu has the coupled clock domain for two clusters, so this driver will directly use cpufreq-dt driver as backend. Signed-off-by: NLeo Yan <leo.yan@linaro.org> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 19 3月, 2015 1 次提交
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由 Tang Yuantian 提交于
This driver works on all QorIQ platforms which include ARM-based cores and PPC-based cores. Rename it in order to represent better. Signed-off-by: NTang Yuantian <Yuantian.Tang@freescale.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 01 2月, 2015 1 次提交
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由 Arnd Bergmann 提交于
The exynos cpufreq driver code recently gained a dependency on the cooling code, which may be a loadable module. This breaks an ARM allmodconfig build: drivers/built-in.o: In function `exynos_cpufreq_probe': :(.text+0x1748e8): undefined reference to `of_cpufreq_cooling_register' To avoid this problem, change cpufreq Kconfig to allow the drivers to be loadable modules as well and enforce a dependency on the thermal module. This change, in order to allow module builds on this cpufreq driver, properly constructs the driver into a single module, instead of several modules. The change also keeps the proper platform dependency, and therefore, it wont load in platforms that are not supposed to be loaded. The user will be able to build the support for all platforms, or select which platforms (s)he wants (as originally), except that now it can be a module, instead. Besides, it will still keep the driver only on those configs that expect it to be on. And it won't compile/load on platforms that it is not supposed to. It brings the config ARM_EXYNOS_CPU_FREQ_BOOST_SW closer to this driver, so it looks better in the menuconfig. We intentionally change ARM_EXYNOS5440_CPUFREQ to be tristate too, to avoid future troubles. Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Kukjin Kim <kgene@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-pm@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Fixes: e725d26c ("cpufreq: exynos: Use device tree to determine if cpufreq cooling should be registered") Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NEduardo Valentin <edubezval@gmail.com>
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- 21 12月, 2014 1 次提交
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由 Srinidhi Kasagar 提交于
This adds the SFI based cpu freq driver for some of the Intel's Silvermont based Atom architectures like Z34xx and Z35xx. Signed-off-by: NRudramuni, Vishwesh M <vishwesh.m.rudramuni@intel.com> Signed-off-by: NSrinidhi Kasagar <srinidhi.kasagar@intel.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NLen Brown <len.brown@intel.com>
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- 27 11月, 2014 1 次提交
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由 Petr Cvek 提交于
Add ability for PXA2xx CPUFreq to be compiled as a module or not at all. Signed-off-by: NPetr Cvek <petr.cvek@tul.cz> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> [ rjw: Subject ] Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 06 11月, 2014 1 次提交
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由 Kelvin Cheung 提交于
This patch adds cpufreq driver for Loongson1B which is capable of changing the CPU frequency dynamically. Signed-off-by: NKelvin Cheung <keguang.zhang@gmail.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 03 10月, 2014 1 次提交
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由 Viresh Kumar 提交于
The naming convention of this driver was always under the scanner, people complained that it should have a more generic name than cpu0, as it manages all CPUs that are sharing clock lines. Also, in future it will be modified to support any number of clusters with separate clock/voltage lines. Lets rename it to 'cpufreq_dt' from 'cpufreq_cpu0'. Tested-by: NStephen Boyd <sboyd@codeaurora.org> Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 09 7月, 2014 1 次提交
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由 Prabhakar Lad 提交于
Since commtit 8a7b1227 (cpufreq: davinci: move cpufreq driver to drivers/cpufreq) this added dependancy only for CONFIG_ARCH_DAVINCI_DA850 where as davinci_cpufreq_init() call is used by all davinci platform. This patch fixes following build error: arch/arm/mach-davinci/built-in.o: In function `davinci_init_late': :(.init.text+0x928): undefined reference to `davinci_cpufreq_init' make: *** [vmlinux] Error 1 Fixes: 8a7b1227 (cpufreq: davinci: move cpufreq driver to drivers/cpufreq) Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Cc: 3.10+ <stable@vger.kernel.org> # 3.10+ Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 07 5月, 2014 1 次提交
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由 Nishanth Menon 提交于
CPUFreq specific helper functions for OPP (Operating Performance Points) now use generic OPP functions that allow CPUFreq to be be moved back into CPUFreq framework. This allows for independent modifications or future enhancements as needed isolated to just CPUFreq framework alone. Here, we just move relevant code and documentation to make this part of CPUFreq infrastructure. Cc: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: NNishanth Menon <nm@ti.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 07 4月, 2014 1 次提交
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由 Vaidyanathan Srinivasan 提交于
Backend driver to dynamically set voltage and frequency on IBM POWER non-virtualized platforms. Power management SPRs are used to set the required PState. This driver works in conjunction with cpufreq governors like 'ondemand' to provide a demand based frequency and voltage setting on IBM POWER non-virtualized platforms. PState table is obtained from OPAL v3 firmware through device tree. powernv_cpufreq back-end driver would parse the relevant device-tree nodes and initialise the cpufreq subsystem on powernv platform. The code was originally written by svaidy@linux.vnet.ibm.com. Over time it was modified to accomodate bug-fixes as well as updates to the the cpu-freq core. Relevant portions of the change logs corresponding to those modifications are noted below: * The policy->cpus needs to be populated in a hotplug-invariant manner instead of using cpu_sibling_mask() which varies with cpu-hotplug. This is because the cpufreq core code copies this content into policy->related_cpus mask which should not vary on cpu-hotplug. [Authored by srivatsa.bhat@linux.vnet.ibm.com] * Create a helper routine that can return the cpu-frequency for the corresponding pstate_id. Also, cache the values of the pstate_max, pstate_min and pstate_nominal and nr_pstates in a static structure so that they can be reused in the future to perform any validations. [Authored by ego@linux.vnet.ibm.com] * Create a driver attribute named cpuinfo_nominal_freq which creates a sysfs read-only file named cpuinfo_nominal_freq. Export the frequency corresponding to the nominal_pstate through this interface. Nominal frequency is the highest non-turbo frequency for the platform. This is generally used for setting governor policies from user space for optimal energy efficiency. [Authored by ego@linux.vnet.ibm.com] * Implement a powernv_cpufreq_get(unsigned int cpu) method which will return the current operating frequency. Export this via the sysfs interface cpuinfo_cur_freq by setting powernv_cpufreq_driver.get to powernv_cpufreq_get(). [Authored by ego@linux.vnet.ibm.com] [Change log updated by ego@linux.vnet.ibm.com] Reviewed-by: NPreeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: NVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NGautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 30 10月, 2013 1 次提交
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由 Sudeep KarkadaNagesha 提交于
The TC2(i.e. CA15_A7) Versatile Express has external Cortex M3 based power controller which is responsible for CPU DVFS and SPC provides the interface for the same. This patch adds a tiny interface driver to check if OPPs are initialised by SPC platform code and register the arm_big_little cpufreq driver. Signed-off-by: NSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 16 10月, 2013 1 次提交
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由 Viresh Kumar 提交于
CONFIG_CPU_FREQ_TABLE will be always enabled when cpufreq framework is used, as cpufreq core depends on it. So, we don't need this CONFIG option anymore as it is not configurable. Remove CONFIG_CPU_FREQ_TABLE and update its users. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 26 7月, 2013 1 次提交
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由 Stratos Karafotis 提交于
The target frequency calculation method in the ondemand governor has changed and it is now independent of the measured average frequency. Consequently, the APERF/MPERF support in cpufreq is not used any more, so drop it. [rjw: Changelog] Signed-off-by: NStratos Karafotis <stratosk@semaphore.gr> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 18 6月, 2013 2 次提交
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由 Viresh Kumar 提交于
currently Tegra cpufreq driver gets built based on ARCH_TEGRA, which doesn't depend on nor select CPU_FREQ itself, so: select CPU_FREQ_TABLE if CPU_FREQ ... isn't guaranteed to fire. The correct solution seems to be: * Add CONFIG_ARM_TEGRA_CPUFREQ to drivers/cpufreq/Kconfig.arm. * Make that Kconfig option selct CPU_FREQ_TABLE. * Make that Kconfig option be def_bool ARCH_TEGRA. * Modify drivers/cpufreq/Makefile to build tegra-cpufreq.c based on that. * Remove all the cpufreq-related stuff from arch/arm/mach-tegra/Kconfig. That way, tegra-cpufreq.c can't be built if !CPU_FREQ, and Tegra's cpufreq works the same way as all the other cpufreq drivers. This patch does it. Suggested-by: NStephen Warren <swarren@nvidia.com> Tested-by: NStephen Warren <swarren@nvidia.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
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由 Viresh Kumar 提交于
By mistake blackfin's cpufreq driver is enabled when CONFIG_BLACKFIN was present, whereas it should have been enabled only when CONFIG_BFIN_CPU_FREQ is present. Fix it. Acked-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
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- 07 6月, 2013 1 次提交
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由 Viresh Kumar 提交于
Move cpufreq driver of powerpc platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 05 6月, 2013 1 次提交
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由 Tang Yuantian 提交于
Add cpufreq driver for Freescale e500mc, e5500 and e6500 SoCs which are capable of changing the CPU frequency dynamically Signed-off-by: NTang Yuantian <Yuantian.Tang@freescale.com> Signed-off-by: NLi Yang <leoli@freescale.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 20 5月, 2013 1 次提交
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of Samsung's ARM based s3c24xx platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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- 10 4月, 2013 12 次提交
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由 Amit Daniel Kachhap 提交于
This patch adds dvfs support for exynos5440 SOC. This soc has 4 cores and they scale at same frequency. The nature of exynos5440 clock controller is different from previous exynos controllers so not using the common exynos cpufreq framework. The major difference being interrupt notification for frequency change. Also, OPP library is used for device tree parsing to get different parameters like frequency, voltage etc. Since the opp library sorts the frequency table in ascending order so they are again re-arranged in descending order. This will have one-to-one mapping with the clock controller state management logic. Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com> Acked-by: NKukjin Kim <kgene.kim@samsung.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Jacob Shin 提交于
Future AMD processors, starting with Family 16h, can provide software with feedback on how the workload may respond to frequency change -- memory-bound workloads will not benefit from higher frequency, where as compute-bound workloads will. This patch enables this "frequency sensitivity feedback" to aid the ondemand governor to make better frequency change decisions by hooking into the powersave bias. Signed-off-by: NJacob Shin <jacob.shin@amd.com> Acked-by: NThomas Renninger <trenn@suse.de> Acked-by: NBorislav Petkov <bp@suse.de> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of powerpc platforms/cell to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of SPARC architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of UNICORE-2 architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of SUPERH architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NPaul Mundt <lethal@linux-sh.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of MIPS architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NJohn Crispin <blogic@openwrt.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of IA64 architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NTony Luck <tony.luck@intel.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq drivers of CRIS architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NJesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of BLACKFIN architecture to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NSteven Miao <realmz6@gmail.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of AVR32 based at32ap platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NHans-Christian Egtvedt <egtvedt@samfundet.no> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based sa11x0 platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 08 4月, 2013 6 次提交
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based integrator platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based pxa2xx platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NEric Miao <eric.y.miao@gmail.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based pxa3xx platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NEric Miao <eric.y.miao@gmail.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based davinci platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NSekhar Nori <nsekhar@ti.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
This patch moves cpufreq driver of ARM based tegra platform to drivers/cpufreq. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NStephen Warren <swarren@nvidia.com> Tested-by: NStephen Warren <swarren@nvidia.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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由 Viresh Kumar 提交于
Normally we keep drivers in alphabetical inside Kconfig and Makefile and over time this was broken for ARM cpufreq drivers. Fix it. Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NStephen Warren <swarren@nvidia.com> Tested-by: NStephen Warren <swarren@nvidia.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 02 4月, 2013 1 次提交
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由 Viresh Kumar 提交于
big LITTLE is ARM's new Architecture focussing power/performance needs of modern world. More information about big LITTLE can be found here: http://www.arm.com/products/processors/technologies/biglittleprocessing.php http://lwn.net/Articles/481055/ In order to keep cpufreq support for all big LITTLE platforms simple/generic, this patch tries to add a generic cpufreq driver layer for all big LITTLE platforms. The driver is divided into two parts: - Core driver: Generic and shared across all big LITTLE SoC's - Glue drivers: Per platform drivers providing ops to the core driver This patch adds in a generic glue driver which would extract information from Device Tree. Future SoC's can either reuse the DT glue or write their own depending on the need. Signed-off-by: NSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 09 2月, 2013 1 次提交
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由 Andrew Lunn 提交于
The Marvell Kirkwood SoCs have simple cpufreq support in hardware. The CPU can either use the a high speed cpu clock, or the slower DDR clock. Add a driver to swap between these two clock sources. Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Acked-by: NJason Cooper <jason@lakedaemon.net> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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