Linux 7.4 power management adds AMD Zen 6 and Intel Rugged Panther Lake support
The Linux 7.4 kernel's merged power management updates include AMD P-State driver support for Ryzen Zen 6 frequency handling and EPP tuning, plus Intel RAPL and thermal cooling support for Rugged Panther Lake.
Summary
Linux 7.4's power management, ACPI and thermal control subsystem updates were merged this week. The AMD P-State driver gains initial maximum frequency capacity handling for Zen 6 Ryzen client processors, along with new Energy Performance Preference values tuned for performance, power and low-power core types. Intel's upcoming Rugged Panther Lake platform receives RAPL PowerCapping driver support and TCC Cooling Thermal driver integration. The ACPI update includes IOVT IOMMU support for ACPICA and a device enumeration code rework, while the Intel int340x thermal driver fixes temperature reporting around zero degrees Celsius.
What's in the Linux 7.4 power management merge
- AMD Zen 6: AMD P-State driver adds maximum frequency capacity handling for Ryzen client processors; new EPP tunings for performance, power, and low-power core variants
- Intel Rugged Panther Lake: Added to RAPL PowerCapping driver and Intel TCC Cooling Thermal driver
- ACPI: CPPC code fixes, device enumeration rework, IOVT IOMMU support for ACPICA
- Thermal: Intel int340x driver fixes temperature reporting at ~0°C
Why it matters
Early kernel support for unreleased hardware platforms helps ensure Linux compatibility at product launch and reduces the gap between hardware availability and usable open-source drivers.
Original reference: www.phoronix.com →