drm/nvc0/fb: detect presense of second rank
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvc0_vram.c b/drivers/gpu/drm/nouveau/nvc0_vram.c
index fd687ee..82b51b2 100644
--- a/drivers/gpu/drm/nouveau/nvc0_vram.c
+++ b/drivers/gpu/drm/nouveau/nvc0_vram.c
@@ -116,6 +116,7 @@
NV_DEBUG(dev, "parts 0x%08x bcast_mem_amount 0x%08x\n", parts, bsize);
dev_priv->vram_type = nouveau_mem_vbios_type(dev);
+ dev_priv->vram_rank_B = !!(nv_rd32(dev, 0x10f200) & 0x00000004);
/* read amount of vram attached to each memory controller */
part = 0;