VRAM_MODULE_V4_MISC_RANK_MASK 7825 drivers/gpu/drm/amd/include/atombios.h #define VRAM_MODULE_V4_MISC_RANK_MASK       0x3
VRAM_MODULE_V4_MISC_RANK_MASK 6631 drivers/gpu/drm/radeon/atombios.h #define VRAM_MODULE_V4_MISC_RANK_MASK       0x3