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-rw-r--r--sys/amd64/conf/NOTES3
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/amd64/conf/NOTES b/sys/amd64/conf/NOTES
index e82086f..0fa1a70 100644
--- a/sys/amd64/conf/NOTES
+++ b/sys/amd64/conf/NOTES
@@ -283,6 +283,9 @@ device acpi
options ACPI_DEBUG
#!options ACPI_NO_SEMAPHORES
+# The cpufreq(4) driver provides support for non-ACPI CPU frequency control
+device cpufreq
+
# Direct Rendering modules for 3D acceleration.
device drm # DRM core module required by DRM drivers
device i915drm # Intel i830 through i915
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