An internal helper library inside the AMD GPU graphics stack that handles communication with the System Management Unit on older Radeon GPUs, used by the Powerplay power-management code to set clocks, voltages, and thermal limits. It is shared plumbing for several generations of pre-Navi AMD graphics cards rather than a driver in its own right.
This is not actually a driver directory; it is a sub-component of the AMD GPU driver, providing SMU (System Management Unit) communication helpers used by the Powerplay power-management framework. It lives or dies with the surrounding amdgpu/radeon stack and is not independently evaluable.
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28files
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21commits, 5y
+106 / −142lines added / removed, 5y
18authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 21 total · active in 11/61 months
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codex reasoning notes (technical)
Not a driver directory: internal AMD DRM power-management helper library (`smumgr`) under powerplay, not a standalone kernel-bound hardware driver.