CG_VCLK_STATUS   2102 drivers/gpu/drm/radeon/cikd.h #define CG_VCLK_STATUS			0xC05000A8
CG_VCLK_STATUS    381 drivers/gpu/drm/radeon/evergreend.h #define CG_VCLK_STATUS                                  0x61c
CG_VCLK_STATUS    147 drivers/gpu/drm/radeon/sumod.h #define CG_VCLK_STATUS                                  0x61c