--- linux-4.5.1.orig/drivers/gpu/drm/radeon/radeon_agp.c
+++ linux-4.5.1/drivers/gpu/drm/radeon/radeon_agp.c
@@ -120,6 +120,11 @@ static struct radeon_agpmode_quirk radeo
 	/* ATI Host Bridge / RV280 [M9+] Needs AGPMode 1 (phoronix forum) */
 	{ PCI_VENDOR_ID_ATI, 0xcbb2, PCI_VENDOR_ID_ATI, 0x5c61,
 		PCI_VENDOR_ID_SONY, 0x8175, 1},
+#if defined(__powerpc__)
+        /* Advanced Micro Devices, Inc. [AMD/ATI] RV280 [Radeon 9200] (rev 01) */
+	{ PCI_VENDOR_ID_APPLE, 0x0034, PCI_VENDOR_ID_ATI, 0x5962,
+                PCI_VENDOR_ID_ATI, 0x5962, -1 },
+#endif
 	{ 0, 0, 0, 0, 0, 0, 0 },
 };
 #endif