MAX_DISPLAY_CLOCK_LEVEL  168 drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.h #define MAX_DISPLAY_CLOCK_LEVEL 8
MAX_DISPLAY_CLOCK_LEVEL   32 drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.h #define MAX_DISPLAY_CLOCK_LEVEL        8