AMD has added initial support for the upcoming Ryzen 9000 “Zen 5” processors to its Linux PMC driver, part of the SoC power management controller driver. Internally known as the Family 26 (1Ah) processors, the Zen 5 family has started getting increased attention in recent months. The AMD PMC driver is the latest to get support for the Family 26 “1Ah” processors ahead of New Year’s.
The AMD SoC PMC driver handles the power management controller on Ryzen APUs, including Renoir, Cezanne, Rembrandt, and Phoenix. It manages S2Idle transactions initiated by the platform firmware on the SMU. As expected, this solely affects the mobility and embedded processors, leaving the desktop CPUs untouched.
AMD hasn’t explicitly stated Family 1Ah is Zen 5, but Phoronix is confident in its reporting. Furthermore, the six patches only affect two dozen lines of code without leaking any unrevealed information about the Zen 5 family of processors.