default or selected kernelversion does not have config value CONFIG_DRM_ATI_PCIGART.
Result is shown for kernelversion 6.9.8
CONFIG_DRM_ATI_PCIGART (not configurable)
configname: CONFIG_DRM_ATI_PCIGART
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>DRM_ATI_PCIGART