# Linux 7.4 power management adds AMD Zen 6 and Intel Rugged Panther Lake support

> **Key takeaway:** 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.

**Published:** 2026-10-23T13:51:29+00:00 
**Source:** Phoronix Benchmarks & Drivers 
**Category:** kernel-os 
**Canonical URL:** https://fosswire.org/news/linux-74-power-management-adds-amd-zen-6-and-intel-rugged-pa.html 

## 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.