Linux 7.2 Power Management Adds New Hardware Support While Dropping AMD Elan
([Hardware] 6 Hours Ago
Linux 7.2 Power Management)
- Reference: 0001641064
- News link: https://www.phoronix.com/news/Linux-7.2-Power-Management
- Source link:
The power management changes merged for the Linux 7.2 kernel are aplenty as usual. New hardware support, dropping obsolete hardware support, and various bug fixes and other enhancements throughout this important area of the kernel.
New on the power management side for Linux 7.2 is CPUFreq scaling support for the Qualcomm Shikra / QCM2390 entry-level SoC for IoT/embedded devices. Meanwhile on removals, as part of [1]phasing out i486 CPU support and [2]removing drivers for the AMD Elan SoCs from the 1990s , the CPUFreq driver support for the AMD Elan SC4 hardware has been removed.
With the power management pull, The LZ4 compression algorithm is now selectable in Kconfig as a hibernation compression option. The full list of power management changes for Linux 7.2 can be found via [3]this pull now in Linux Git.
On the thermal subsystem side, additional Arrow Lake CPU models is added to the intel_tcc_cooling driver. The SpacemiT K1 now has thermal sensor support in the mainline kernel. Separately, the NXP i.MX96 also has temperature sensor support. [4]This pull has all the thermal changes.
With the [5]ACPI pull for Linux 7.2 there is the support in the ACPI CPPC library for [6]CPPC v4 as contributed by NVIDIA and useful for their NVIDIA Vera CPU.
[1] https://www.phoronix.com/news/Linux-7.1-Phasing-Out-i486
[2] https://www.phoronix.com/news/AMD-Elan-Linux-Driver-Removal
[3] https://lore.kernel.org/all/CAJZ5v0iKw2Vso0t19pq-ktLFGsyiHK4t2D1wyYL+r=nUt0_ksA@mail.gmail.com/
[4] https://lore.kernel.org/all/CAJZ5v0gO6vETP0+054J4pSdPH8ehn_1zY2rRqX2Znc9jeD-4RQ@mail.gmail.com/
[5] https://lore.kernel.org/all/CAJZ5v0h-9HOj9ar1sa2oeJ1SJQ-CbtTj03EyLpuhpQOPHa2fSA@mail.gmail.com/
[6] https://www.phoronix.com/news/ACPI-CPPC-v4-Linux-7.2
New on the power management side for Linux 7.2 is CPUFreq scaling support for the Qualcomm Shikra / QCM2390 entry-level SoC for IoT/embedded devices. Meanwhile on removals, as part of [1]phasing out i486 CPU support and [2]removing drivers for the AMD Elan SoCs from the 1990s , the CPUFreq driver support for the AMD Elan SC4 hardware has been removed.
With the power management pull, The LZ4 compression algorithm is now selectable in Kconfig as a hibernation compression option. The full list of power management changes for Linux 7.2 can be found via [3]this pull now in Linux Git.
On the thermal subsystem side, additional Arrow Lake CPU models is added to the intel_tcc_cooling driver. The SpacemiT K1 now has thermal sensor support in the mainline kernel. Separately, the NXP i.MX96 also has temperature sensor support. [4]This pull has all the thermal changes.
With the [5]ACPI pull for Linux 7.2 there is the support in the ACPI CPPC library for [6]CPPC v4 as contributed by NVIDIA and useful for their NVIDIA Vera CPU.
[1] https://www.phoronix.com/news/Linux-7.1-Phasing-Out-i486
[2] https://www.phoronix.com/news/AMD-Elan-Linux-Driver-Removal
[3] https://lore.kernel.org/all/CAJZ5v0iKw2Vso0t19pq-ktLFGsyiHK4t2D1wyYL+r=nUt0_ksA@mail.gmail.com/
[4] https://lore.kernel.org/all/CAJZ5v0gO6vETP0+054J4pSdPH8ehn_1zY2rRqX2Znc9jeD-4RQ@mail.gmail.com/
[5] https://lore.kernel.org/all/CAJZ5v0h-9HOj9ar1sa2oeJ1SJQ-CbtTj03EyLpuhpQOPHa2fSA@mail.gmail.com/
[6] https://www.phoronix.com/news/ACPI-CPPC-v4-Linux-7.2