VRAM_MODULE_V4_MISC_DUAL_RANK 7826 drivers/gpu/drm/amd/include/atombios.h #define VRAM_MODULE_V4_MISC_DUAL_RANK       0x1
VRAM_MODULE_V4_MISC_DUAL_RANK 6632 drivers/gpu/drm/radeon/atombios.h #define VRAM_MODULE_V4_MISC_DUAL_RANK       0x1