mmCP_RB_DOORBELL_RANGE_LOWER_DEFAULT 2410 drivers/gpu/drm/amd/include/asic_reg/gc/gc_10_1_0_default.h #define mmCP_RB_DOORBELL_RANGE_LOWER_DEFAULT                                     0x00000000
mmCP_RB_DOORBELL_RANGE_LOWER_DEFAULT 1225 drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_default.h #define mmCP_RB_DOORBELL_RANGE_LOWER_DEFAULT                                     0x00000000