ulLClockFreq 3451 drivers/gpu/drm/amd/include/atombios.h ULONG ulLClockFreq; //GPU Lclk freq in 10kHz unit, have relationship with NCLK in NorthBridge ulLClockFreq 2997 drivers/gpu/drm/radeon/atombios.h ULONG ulLClockFreq; //GPU Lclk freq in 10kHz unit, have relationship with NCLK in NorthBridge