ulLowVoltageHTLinkFreq 3304 drivers/gpu/drm/amd/include/atombios.h ULONG ulLowVoltageHTLinkFreq; // in 10Khz ulLowVoltageHTLinkFreq 2851 drivers/gpu/drm/radeon/atombios.h ULONG ulLowVoltageHTLinkFreq; // in 10Khz