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path: root/drivers/cpufreq
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2025-02-07cpufreq: Export cpufreq_boost_set_sw()Viresh Kumar
This will be used directly by cpufreq driver going forward, export it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2025-02-07cpufreq: staticize cpufreq_boost_trigger_state()Viresh Kumar
cpufreq_boost_trigger_state() is only used by cpufreq core, mark it static. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2025-02-07cpufreq: Stop checking for duplicate available/boost freq attributesViresh Kumar
None of the drivers set these attributes directly now, remove the unnecessary check. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: Remove cpufreq_generic_attrsViresh Kumar
All users of cpufreq_generic_attr are migrated now, remove it. While at it, also stop exporting attributes for available and boost frequencies as they are only used by cpufreq core now. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: virtual: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: vexpress: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: tegra: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: speedstep: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: spear: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: sh: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: scpi: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: scmi: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: sc520_freq: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: qoriq: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: qcom: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: powernv: Stop setting common freq attributesViresh Kumar
The cpufreq core handles this now, the driver can skip setting it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: powernow: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: pmac: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: pasemi: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: p4: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: omap: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: mediatek: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: loongson: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: longhaul: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: kirkwood: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: imx6q: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: elanfreq: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: e_powersaver: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: davinci: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: brcmstb: Stop setting common freq attributesViresh Kumar
The cpufreq core handles this now, the driver can skip setting it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: bmips: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: apple: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: acpi: Stop setting common freq attributesViresh Kumar
The core handles this now, the driver can skip setting it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: dt: Stop setting cpufreq_driver->attr fieldViresh Kumar
The cpufreq core now handles this for basic attributes, including boost frequencies, the driver can skip setting them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: Always create freq-table related sysfs fileViresh Kumar
Currently it is left for the individual drivers to set the available and boost frequencies related attributes in the cpufreq_driver->attr field. Some drivers provide them, while others don't. A quick search revealed that only the drivers that set the policy->freq_table field, enable these attributes. Which makes sense as well, since the show_available_freqs() helper works only if the freq_table is present. In order to simplify drivers, create the relevant sysfs files forcefully from cpufreq core. For now, skip adding them twice. This can be removed once all the drivers are updated. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
2025-02-07cpufreq: Use str_enable_disable() helperLifeng Zheng
Commit f994c1cb6c43 ("cpufreq: Use str_enable_disable()-like helpers") has already introduced helpers from string_choices.h and replaced ternary syntax with it. Use str_enable_disable() helper in this line to stay consistent. Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2025-02-06Merge tag 'amd-pstate-v6.14-2025-02-06' of ↵Rafael J. Wysocki
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux Merge amd-pstate driver fixes for 6.14-rc2 from Mario Limonciello: "* Fix some error cleanup paths with mutex use and boost * Fix a ref counting issue * Fix a schedutil issue" * tag 'amd-pstate-v6.14-2025-02-06' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: cpufreq/amd-pstate: Fix cpufreq_policy ref counting cpufreq/amd-pstate: Fix max_perf updation with schedutil cpufreq/amd-pstate: Remove the goto label in amd_pstate_update_limits cpufreq/amd-pstate: Fix per-policy boost flag incorrect when fail
2025-02-06cpufreq/amd-pstate: Fix cpufreq_policy ref countingDhananjay Ugwekar
amd_pstate_update_limits() takes a cpufreq_policy reference but doesn't decrement the refcount in one of the exit paths, fix that. Fixes: 45722e777fd9 ("cpufreq: amd-pstate: Optimize amd_pstate_update_limits()") Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20250205112523.201101-10-dhananjay.ugwekar@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2025-02-06cpufreq: amd-pstate: Remove unnecessary driver_lock in set_boostDhananjay Ugwekar
set_boost is a per-policy function call, hence a driver wide lock is unnecessary. Also this mutex_acquire can collide with the mutex_acquire from the mode-switch path in status_store(), which can lead to a deadlock. So, remove it. Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> Acked-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2025-02-06cpufreq: scpi: compare kHz instead of Hzzuoqian
The CPU rate from clk_get_rate() may not be divisible by 1000 (e.g., 133333333). But the rate calculated from frequency(kHz) is always divisible by 1000 (e.g., 133333000). Comparing the rate causes a warning during CPU scaling: "cpufreq: __target_index: Failed to change cpu frequency: -5". When we choose to compare kHz here, the issue does not occur. Fixes: 343a8d17fa8d ("cpufreq: scpi: remove arm_big_little dependency") Signed-off-by: zuoqian <zuoqian113@gmail.com> Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2025-02-05cpufreq: prevent NULL dereference in cpufreq_online()Aboorva Devarajan
Ensure cpufreq_driver->set_boost is non-NULL before using it in cpufreq_online() to prevent a potential NULL pointer dereference. Reported-by: Gautam Menghani <gautam@linux.ibm.com> Closes: https://lore.kernel.org/all/c9e56c5f54cc33338762c94e9bed7b5a0d5de812.camel@linux.ibm.com/ Fixes: dd016f379ebc ("cpufreq: Introduce a more generic way to set default per-policy boost flag") Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Link: https://patch.msgid.link/20250205181347.2079272-1-aboorvad@linux.ibm.com [ rjw: Minor edits in the subject and changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-02-05cpufreq: airoha: modify CONFIG_OF dependencyArnd Bergmann
Compile-testing without CONFIG_OF leads to a harmless build warning: drivers/cpufreq/airoha-cpufreq.c:109:34: error: 'airoha_cpufreq_match_list' defined but not used [-Werror=unused-const-variable=] 109 | static const struct of_device_id airoha_cpufreq_match_list[] __initconst = { | ^~~~~~~~~~~~~~~~~~~~~~~~~ It would be possible to mark the variable as __maybe_unused to shut up that warning, but a Kconfig dependency seems more appropriate as this still allows build testing in allmodconfig and randconfig builds on all architectures. An earlier commit, b865a8404642 ("cpufreq: airoha: Depends on OF"), tried to fix it incorrectly. ARCH_AIROHA already requires CONFIG_OF, so this change does nothing, and the dependency is still missing for the COMPILE_TEST case. Fix it properly. Fixes: 84cf9e541ccc ("cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver") Fixes: b865a8404642 ("cpufreq: airoha: Depends on OF") Signed-off-by: Arnd Bergmann <arnd@arndb.de> [ Viresh: updated commit log and fixed rebase conflict ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/9d51d2710061dfa7f2568287c6ed125b858b7318.1738580005.git.viresh.kumar@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-02-05cpufreq/amd-pstate: Fix max_perf updation with schedutilDhananjay Ugwekar
In adjust_perf() callback, we are setting the max_perf to highest_perf, as opposed to the correct limit value i.e. max_limit_perf. Fix that. Fixes: 3f7b835fa4d0 ("cpufreq/amd-pstate: Move limit updating code") Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20250205112523.201101-3-dhananjay.ugwekar@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2025-02-05cpufreq/amd-pstate: Remove the goto label in amd_pstate_update_limitsDhananjay Ugwekar
Scope based guard/cleanup macros should not be used together with goto labels. Hence, remove the goto label. Fixes: 6c093d5a5b73 ("cpufreq/amd-pstate: convert mutex use to guard()") Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20250205112523.201101-2-dhananjay.ugwekar@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2025-02-03cpufreq/amd-pstate: Fix per-policy boost flag incorrect when failLifeng Zheng
Commit c8c68c38b56f ("cpufreq: amd-pstate: initialize core precision boost state") sets per-policy boost flag to false when boost fail. However, this boost flag will be set to reverse value in store_local_boost() and cpufreq_boost_trigger_state() in cpufreq.c. This will cause the per-policy boost flag set to true when fail to set boost. Remove the extra assignment in amd_pstate_set_boost() and keep all operations on per-policy boost flag outside of set_boost() to fix this problem. Fixes: c8c68c38b56f ("cpufreq: amd-pstate: initialize core precision boost state") Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20250110091949.3610770-1-zhenglifeng1@huawei.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2025-01-29cpufreq: airoha: Depends on OFViresh Kumar
The Airoha cpufreq depends on OF and must be marked as such. With the kernel compiled without OF support, we get following warning: drivers/cpufreq/airoha-cpufreq.c:109:34: warning: 'airoha_cpufreq_match_list' defined but not used [-Wunused-const-variable=] 109 | static const struct of_device_id airoha_cpufreq_match_list[] __initconst = { | ^~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202501251941.0fXlcd1D-lkp@intel.com/ Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/455e18c947bd9529701a2f1c796f0f934d1354d7.1738050679.git.viresh.kumar@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-01-23cpufreq: ACPI: Remove set_boost in acpi_cpufreq_cpu_init()Lifeng Zheng
At the end of cpufreq_online() in cpufreq.c, set_boost is executed and the per-policy boost flag is set to mirror the cpufreq_driver boost, so it is not necessary to run set_boost in acpi_cpufreq_cpu_init(). Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/20250117101457.1530653-5-zhenglifeng1@huawei.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-01-23cpufreq: CPPC: Fix wrong max_freq in policy initializationLifeng Zheng
In policy initialization, policy->max and policy->cpuinfo.max_freq are always set to the value calculated from caps->nominal_perf. This will cause the frequency stay on base frequency even if the policy is already boosted when a CPU is going online. Fix this by using policy->boost_enabled to determine which value should be set. Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/20250117101457.1530653-4-zhenglifeng1@huawei.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-01-23cpufreq: Introduce a more generic way to set default per-policy boost flagLifeng Zheng
In cpufreq_online() of cpufreq.c, the per-policy boost flag is already set to mirror the cpufreq_driver boost during init but using freq_table to judge if the policy has boost frequency. There are two drawbacks to this approach: 1. It doesn't work for the cpufreq drivers that do not use a frequency table. For now, acpi-cpufreq and amd-pstate have to enable boost in policy initialization. And cppc_cpufreq never set policy to boost when going online no matter what the cpufreq_driver boost flag is. 2. If the CPU goes offline when cpufreq_driver boost is enabled and then goes online when cpufreq_driver boost is disabled, the per-policy boost flag will incorrectly remain true. Running set_boost at the end of the online process is a more generic way for all cpufreq drivers. Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Link: https://patch.msgid.link/20250117101457.1530653-3-zhenglifeng1@huawei.com Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-01-23cpufreq: Fix re-boost issue after hotplugging a CPULifeng Zheng
It turns out that CPUX will stay on the base frequency after performing these operations: 1. boost all CPUs: echo 1 > /sys/devices/system/cpu/cpufreq/boost 2. offline one CPU: echo 0 > /sys/devices/system/cpu/cpuX/online 3. deboost all CPUs: echo 0 > /sys/devices/system/cpu/cpufreq/boost 4. online CPUX: echo 1 > /sys/devices/system/cpu/cpuX/online 5. boost all CPUs again: echo 1 > /sys/devices/system/cpu/cpufreq/boost This is because max_freq_req of the policy is not updated during the online process, and the value of max_freq_req before the last offline is retained. When the CPU is boosted again, freq_qos_update_request() will do nothing because the old value is the same as the new one. This causes the CPU to stay at the base frequency. Updating max_freq_req in cpufreq_online() will solve this problem. Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/20250117101457.1530653-2-zhenglifeng1@huawei.com [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>