diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 1023eeb..0e9eb76 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -324,11 +324,12 @@
 
 	r100_hdp_reset(rdev);
 	/* FIXME: rv380 one pipes ? */
-	if ((rdev->family == CHIP_R300) || (rdev->family == CHIP_R350)) {
+	if ((rdev->family == CHIP_R300 && rdev->pdev->device != 0x4144) ||
+	    (rdev->family == CHIP_R350)) {
 		/* r300,r350 */
 		rdev->num_gb_pipes = 2;
 	} else {
-		/* rv350,rv370,rv380 */
+		/* rv350,rv370,rv380,r300 AD */
 		rdev->num_gb_pipes = 1;
 	}
 	rdev->num_z_pipes = 1;
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index dc6eba6..419630d 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -417,8 +417,9 @@
 	return -EBUSY;
 }
 
-static void radeon_init_pipes(drm_radeon_private_t *dev_priv)
+static void radeon_init_pipes(struct drm_device *dev)
 {
+	drm_radeon_private_t *dev_priv = dev->dev_private;
 	uint32_t gb_tile_config, gb_pipe_sel = 0;
 
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV530) {
@@ -436,11 +437,12 @@
 		dev_priv->num_gb_pipes = ((gb_pipe_sel >> 12) & 0x3) + 1;
 	} else {
 		/* R3xx */
-		if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
+		if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300 &&
+		     dev->pdev->device != 0x4144) ||
 		    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350)) {
 			dev_priv->num_gb_pipes = 2;
 		} else {
-			/* R3Vxx */
+			/* RV3xx/R300 AD */
 			dev_priv->num_gb_pipes = 1;
 		}
 	}
@@ -736,7 +738,7 @@
 
 	/* setup the raster pipes */
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R300)
-	    radeon_init_pipes(dev_priv);
+	    radeon_init_pipes(dev);
 
 	/* Reset the CP ring */
 	radeon_do_cp_reset(dev_priv);