Time:2026-10-26Reading:853Second
According to reports, the AMD 600 series chipset has finally received official temperature sensor monitoring support after four years of release. The Linux 7.4 kernel has been patched and marked for backtracking to stable branches in 7.2 and 7.3.
The key to this support lies in a driver called 'xhci pci-prom21'. This driver was generated by OpenAI Codex GPT-5.5 and was originally upstream in Linux 7.2, but at that time only included the device ID of the AMD 800 series chipset, resulting in the 600 series motherboard being unusable.
It is worth mentioning that the patch included this time only adds the PCI ID of the 600 series, and the driver itself does not require any other modifications.
This sensor is hidden in the xHCI controller integrated into the chipset. Promontory 21 is a single-chip IP used by AMD to build 600 and 800 series chipsets. Its integrated xHCI controller has an 8-bit temperature sensor inside, which can indirectly reflect the overall operating temperature of the chipset.
Previously, the sensor had been in an unreadable state on the 600 series motherboard, and users were unable to view the chipset temperature in the system.
This update covers AM5 platform motherboards such as X670E, X670, B650E, and B650. For users using 600 series motherboards and Ryzen 7000 series processors, updating the kernel can read the chipset temperature through the hwmon interface, providing data support for heat dissipation monitoring and overclocking debugging.
It should be pointed out that the AI generated drivers have shifted from only supporting the 800 series to supplementing the 600 series, reflecting the changing underlying hardware support ecosystem.
