Changes in Makefile

16479389 - cpufreq: ppc_cbe: Remove powerpc Cell driver

Wed, 18 Dec 2024 10:55:10 +0000

cpufreq: ppc_cbe: Remove powerpc Cell driverThis driver can no longer be built since support for IBM Cell Blades wasremoved, in particular CBE_RAS.Remove the driver.Signed-off-by: Michael Ellerman Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241218105523.416573-22-mpe@ellerman.id.au List of files: /linux-6.15/drivers/cpufreq/Makefile

84cf9e54 - cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver

Thu, 09 Jan 2025 13:12:58 +0000

cpufreq: airoha: Add EN7581 CPUFreq SMCCC driverAdd simple CPU Freq driver for Airoha EN7581 SoC that control CPUfrequency scaling with SMC APIs and register a generic "cpufreq-dt"device.All CPU share the same frequency and can't be controlled independently.CPU frequency is controlled by the attached PM domain.Add SoC compatible to cpufreq-dt-plat block list as a dedicated cpufreqdriver is needed with OPP v2 nodes declared in DTS.Signed-off-by: Christian Marangi Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

fae2987e - cpufreq: maple: Remove maple driver

Tue, 12 Nov 2024 08:51:48 +0000

cpufreq: maple: Remove maple driverThis driver is no longer buildable since the PPC_MAPLE platform wasremoved, see commit 62f8f307c80e ("powerpc/64: Remove maple platform").Remove the driver.Note that the comment in the driver says it supports "SMU & 970FXbased G5 Macs", but that's not true, that comment was copied frompmac64-cpufreq.c, which still exists and continues to support thosemachines.Acked-by: Viresh Kumar Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241112085148.415574-1-mpe@ellerman.id.au List of files: /linux-6.15/drivers/cpufreq/Makefile

4fd06a53 - cpufreq: add virtual-cpufreq driver

Thu, 19 Sep 2024 00:08:33 +0000

cpufreq: add virtual-cpufreq driverIntroduce a virtualized cpufreq driver for guest kernels to improveperformance and power of workloads within VMs.This driver does two main things:1. Sends the frequency of vCPUs as a hint to the host. The host uses thehint to schedule the vCPU threads and decide physical CPU frequency.2. If a VM does not support a virtualized FIE(like AMUs), it queries thehost CPU frequency by reading a MMIO region of a virtual cpufreq deviceto update the guest's frequency scaling factor periodically. This enablesaccurate Per-Entity Load Tracking for tasks running in the guest.Co-developed-by: Saravana Kannan Signed-off-by: Saravana Kannan Signed-off-by: David Dai Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

ccf51454 - cpufreq: Add Loongson-3 CPUFreq driver support

Fri, 05 Jul 2024 06:06:49 +0000

cpufreq: Add Loongson-3 CPUFreq driver supportSome of LoongArch processors (Loongson-3 series) support DVFS, theirIOCSR.FEATURES has IOCSRF_FREQSCALE set. And they has a micro-core inthe package called SMC (System Management Controller), which can beused to detect temperature, control fans, scale frequency and voltage,etc.The Loongson-3 CPUFreq driver is very simple now, it communicate withSMC, get DVFS info, set target frequency from CPUFreq core, and so on.There is a command list to interact with SMC, widely-used commands inthe CPUFreq driver include:CMD_GET_VERSION: Get SMC firmware version.CMD_GET_FEATURE: Get enabled SMC features.CMD_SET_FEATURE: Enable SMC features, such as basic DVFS, BOOST.CMD_GET_FREQ_LEVEL_NUM: Get the number of all frequency levels.CMD_GET_FREQ_BOOST_LEVEL: Get the first boost frequency level.CMD_GET_FREQ_LEVEL_INFO: Get the detail info of a frequency level.CMD_GET_FREQ_INFO: Get the current frequency.CMD_SET_FREQ_INFO: Set the target frequency.In future we will add automatic frequency scaling, which is similar toIntel's HWP (HardWare P-State).Signed-off-by: Binbin Zhou Signed-off-by: Huacai Chen [ Viresh: Minor formatting cleanups, change return type of exit() to void and use devm_mutex_init() ]Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

cf8e8658 - arch: Remove Itanium (IA-64) architecture

Thu, 20 Oct 2022 13:54:33 +0000

arch: Remove Itanium (IA-64) architectureThe Itanium architecture is obsolete, and an informal survey [0] revealsthat any residual use of Itanium hardware in production is mostly HP-UXor OpenVMS based. The use of Linux on Itanium appears to be limited toenthusiasts that occasionally boot a fresh Linux kernel to see whetherthings are still working as intended, and perhaps to churn out somedistro packages that are rarely used in practice.None of the original companies behind Itanium still produce or supportany hardware or software for the architecture, and it is listed as'Orphaned' in the MAINTAINERS file, as apparently, none of the engineersthat contributed on behalf of those companies (nor anyone else, for thatmatter) have been willing to support or maintain the architectureupstream or even be responsible for applying the odd fix. The Intelfirmware team removed all IA-64 support from the Tianocore/EDK2reference implementation of EFI in 2018. (Itanium is the originalarchitecture for which EFI was developed, and the way Linux supports itdeviates significantly from other architectures.) Some distros, such asDebian and Gentoo, still maintain [unofficial] ia64 ports, but many havedropped support years ago.While the argument is being made [1] that there is a 'for the commongood' angle to being able to build and run existing projects such as theGrid Community Toolkit [2] on Itanium for interoperability testing, thefact remains that none of those projects are known to be deployed onLinux/ia64, and very few people actually have access to such a system inthe first place. Even if there were ways imaginable in which Linux/ia64could be put to good use today, what matters is whether anyone isactually doing that, and this does not appear to be the case.There are no emulators widely available, and so boot testing Itanium isgenerally infeasible for ordinary contributors. GCC still supports IA-64but its compile farm [3] no longer has any IA-64 machines. GLIBC wouldlike to get rid of IA-64 [4] too because it would permit some overduecode cleanups. In summary, the benefits to the ecosystem of having IA-64be part of it are mostly theoretical, whereas the maintenance overheadof keeping it supported is real.So let's rip off the band aid, and remove the IA-64 arch code entirely.This follows the timeline proposed by the Debian/ia64 maintainer [5],which removes support in a controlled manner, leaving IA-64 in a knowngood state in the most recent LTS release. Other projects will followonce the kernel support is removed.[0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/[1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/[2] https://gridcf.org/gct-docs/latest/index.html[3] https://cfarm.tetaneutral.net/machines/list/[4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/[5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/Acked-by: Tony Luck Signed-off-by: Ard Biesheuvel List of files: /linux-6.15/drivers/cpufreq/Makefile

9a55ab6f - cpufreq: loongson1: Delete obsolete driver

Thu, 12 Jan 2023 13:53:42 +0000

cpufreq: loongson1: Delete obsolete driverThe generic DT based cpufreq driver works for Loongson-1,so delete the old custom driver.Signed-off-by: Keguang Zhang Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/drivers/cpufreq/Makefile

014e79d7 - cpufreq: remove s3c24xx drivers

Fri, 30 Sep 2022 11:41:15 +0000

cpufreq: remove s3c24xx driversAll s3c24xx platforms were removed, so these five drivers are allobsolete now.Reviewed-by: Krzysztof Kozlowski Acked-by: Viresh Kumar Signed-off-by: Arnd Bergmann List of files: /linux-6.15/drivers/cpufreq/Makefile

349619f0 - cpufreq: remove sa1100 driver

Fri, 30 Sep 2022 11:44:37 +0000

cpufreq: remove sa1100 driverThe sa11xx platform has two cpufreq drivers, one for the olderStrongARM1100 SoC, and a second one for StrongARM1110. Afterthe removal of most SA1100 based machines, this driver is unused,and only the sa1110-cpufreq driver remains.Acked-by: Viresh Kumar Signed-off-by: Arnd Bergmann List of files: /linux-6.15/drivers/cpufreq/Makefile

6286bbb4 - cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states

Mon, 28 Nov 2022 14:29:11 +0000

cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-statesThis driver implements CPU frequency scaling for Apple Silicon SoCs,including M1 (t8103), M1 Max/Pro/Ultra (t600x), and M2 (t8112).Each CPU cluster has its own register set, and frequency management isfully automated by the hardware; the driver only has to write oneregister. There is boost frequency support, but the hardware will onlyallow their use if only a subset of cores in a cluster are innon-deep-idle. Since we don't support deep idle yet, these frequenciesare not achievable, but the driver supports them. They will remaindisabled in the device tree until deep idle is implemented, to avoidconfusing users.This driver does not yet implement the memory controller performancestate tuning that usually accompanies higher CPU p-states. This will bedone in a future patch.Acked-by: Marc Zyngier Signed-off-by: Hector Martin Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

14eb1c96 - cpufreq: amd-pstate: Add test module for amd-pstate driver

Wed, 17 Aug 2022 03:46:28 +0000

cpufreq: amd-pstate: Add test module for amd-pstate driverAdd amd-pstate-ut test module, this module is used by kselftestto unit test amd-pstate functionality. This module will beexpected by some of selftests to be present and loaded.Signed-off-by: Meng Li Acked-by: Huang Rui Reviewed-by: Shuah Khan Signed-off-by: Shuah Khan List of files: /linux-6.15/drivers/cpufreq/Makefile

60e10f89 - cpufreq: amd-pstate: Add trace for AMD P-State module

Fri, 24 Dec 2021 01:05:03 +0000

cpufreq: amd-pstate: Add trace for AMD P-State moduleAdd trace event to monitor the performance value changes which iscontrolled by cpu governors.Signed-off-by: Huang Rui Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/drivers/cpufreq/Makefile

ec437d71 - cpufreq: amd-pstate: Introduce a new AMD P-State driver to support future processors

Fri, 24 Dec 2021 01:05:00 +0000

cpufreq: amd-pstate: Introduce a new AMD P-State driver to support future processorsAMD P-State is the AMD CPU performance scaling driver that introduces anew CPU frequency control mechanism on AMD Zen based CPU series in Linuxkernel. The new mechanism is based on Collaborative processorperformance control (CPPC) which is finer grain frequency managementthan legacy ACPI hardware P-States. Current AMD CPU platforms are usingthe ACPI P-states driver to manage CPU frequency and clocks withswitching only in 3 P-states. AMD P-State is to replace the ACPIP-states controls, allows a flexible, low-latency interface for theLinux kernel to directly communicate the performance hints to hardware.AMD P-State leverages the Linux kernel governors such as *schedutil*,*ondemand*, etc. to manage the performance hints which are provided by CPPChardware functionality. The first version for AMD P-State is to support oneof the Zen3 processors, and we will support more in future after we verifythe hardware and SBIOS functionalities.There are two types of hardware implementations for AMD P-State: one is fullMSR support and another is shared memory support. It can useX86_FEATURE_CPPC feature flag to distinguish the different types.Using the new AMD P-State method + kernel governors (*schedutil*,*ondemand*, ...) to manage the frequency update is the most appropriatebridge between AMD Zen based hardware processor and Linux kernel, theprocessor is able to adjust to the most efficiency frequency according tothe kernel scheduler loading.Please check the detailed CPU feature and MSR register description inProcessor Programming Reference (PPR) for AMD Family 19h Model 51h,Revision A1 Processors:https://www.amd.com/system/files/TechDocs/56569-A1-PUB.zipSigned-off-by: Huang Rui Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/drivers/cpufreq/Makefile

4855e26b - cpufreq: mediatek-hw: Add support for CPUFREQ HW

Fri, 03 Sep 2021 08:39:24 +0000

cpufreq: mediatek-hw: Add support for CPUFREQ HWIntroduce cpufreq HW driver which can supportCPU frequency adjust in MT6779 platform.Signed-off-by: Hector.Yuan [ Viresh: Massaged the patch and cleaned some stuff. ]Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

73f70d6c - cpufreq: sfi-cpufreq: Remove driver for deprecated firmware

Thu, 11 Feb 2021 13:40:01 +0000

cpufreq: sfi-cpufreq: Remove driver for deprecated firmwareSFI-based platforms are gone. So does this driver.Signed-off-by: Andy Shevchenko Acked-by: Linus Walleij Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/drivers/cpufreq/Makefile

7114ebff - cpufreq: remove tango driver

Wed, 20 Jan 2021 13:16:44 +0000

cpufreq: remove tango driverThe tango platform is getting removed, so the driver is nolonger needed.Cc: Marc Gonzalez Cc: Mans Rullgard Signed-off-by: Arnd Bergmann [ Viresh: Update cpufreq-dt-platdev.c as well ]Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

df320f89 - cpufreq: Add Tegra194 cpufreq driver

Thu, 16 Jul 2020 08:30:01 +0000

cpufreq: Add Tegra194 cpufreq driverAdd support for CPU frequency scaling on Tegra194. The frequencyof each core can be adjusted by writing a clock divisor value toa MSR on the core. The range of valid divisors is queried fromthe BPMP.Signed-off-by: Mikko Perttunen Signed-off-by: Sumit Gupta Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

5853d602 - cpufreq: remove unicore32 driver

Wed, 10 Jun 2020 06:57:50 +0000

cpufreq: remove unicore32 driverThe unicore32 port is removed from the kernel.There is no point to keep stale cpufreq driver for this architecture.Signed-off-by: Mike Rapoport Acked-by: Arnd Bergmann Acked-by: Guenter Roeck List of files: /linux-6.15/drivers/cpufreq/Makefile

a0f950d3 - cpufreq: merge arm_big_little and vexpress-spc

Mon, 21 Oct 2019 10:20:34 +0000

cpufreq: merge arm_big_little and vexpress-spcarm_big_little cpufreq driver was designed as a generic big littledriver that could be used by any platform and make use of bL switcher.Over years alternate solutions have been designed and merged to dealwith bL/HMP systems like EAS.Also since no other driver made use of generic arm_big_little cpufreqdriver except Vexpress SPC, we can merge them together as vexpress-spcdriver used only on Vexpress TC2(CA15_CA7) platform.Acked-by: Nicolas Pitre Signed-off-by: Sudeep Holla Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile

7d127095 - cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs

Thu, 25 Jul 2019 10:41:31 +0000

cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socsThe kryo cpufreq driver reads the nvmem cell and uses that data topopulate the opps. There are other qcom cpufreq socs like krait whichdoes similar thing. Except for the interpretation of the read data,rest of the driver is same for both the cases. So pull the common thingsout for reuse.Signed-off-by: Sricharan R [niklas.cassel@linaro.org: split dt-binding into a separate patch anddo not rename the compatible string. Update MAINTAINERS file.]Signed-off-by: Niklas Cassel Reviewed-by: Ilia Lin Reviewed-by: Stephen Boyd Signed-off-by: Viresh Kumar List of files: /linux-6.15/drivers/cpufreq/Makefile