MAX_XGMI_LEVEL     64 drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h #define MAX_XGMI_LEVEL        (NUM_XGMI_LEVELS        - 1)
MAX_XGMI_LEVEL     51 drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if_arcturus.h #define MAX_XGMI_LEVEL        (NUM_XGMI_LEVELS        - 1)