usMemoryStart    7255 drivers/gpu/drm/amd/include/atombios.h   USHORT  usMemoryStart;                //in 8Kb boundry, offset from memory base address
usMemoryStart    6106 drivers/gpu/drm/radeon/atombios.h   USHORT  usMemoryStart;                //in 8Kb boundary, offset from memory base address