Add comptaible for AST2700 and set dma mask to 64-bit.
The ftgmac100 on AST2700 supports 64-bit DMA.

Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com>
---
 drivers/net/ethernet/faraday/ftgmac100.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index cae23b712a6d..5b277285666a 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1884,7 +1884,8 @@ static int ftgmac100_probe(struct platform_device *pdev)
 	np = pdev->dev.of_node;
 	if (np && (of_device_is_compatible(np, "aspeed,ast2400-mac") ||
 		   of_device_is_compatible(np, "aspeed,ast2500-mac") ||
-		   of_device_is_compatible(np, "aspeed,ast2600-mac"))) {
+		   of_device_is_compatible(np, "aspeed,ast2600-mac") ||
+		   of_device_is_compatible(np, "aspeed,ast2700-mac"))) {
 		priv->rxdes0_edorr_mask = BIT(30);
 		priv->txdes0_edotr_mask = BIT(30);
 		priv->is_aspeed = true;
@@ -1967,7 +1968,6 @@ static int ftgmac100_probe(struct platform_device *pdev)
 			dev_err(priv->dev, "MII probe failed!\n");
 			goto err_ncsi_dev;
 		}
-
 	}
 
 	if (priv->is_aspeed) {
@@ -1995,9 +1995,18 @@ static int ftgmac100_probe(struct platform_device *pdev)
 		}
 
 		/* Disable ast2600 problematic HW arbitration */
-		if (of_device_is_compatible(np, "aspeed,ast2600-mac"))
+		if (of_device_is_compatible(np, "aspeed,ast2600-mac") ||
+		    of_device_is_compatible(np, "aspeed,ast2700-mac"))
 			iowrite32(FTGMAC100_TM_DEFAULT,
 				  priv->base + FTGMAC100_OFFSET_TM);
+
+		if (of_device_is_compatible(np, "aspeed,ast2700-mac")) {
+			err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+			if (err) {
+				dev_err(&pdev->dev, "64-bit DMA enable failed\n");
+				goto err_register_netdev;
+			}
+		}
 	}
 
 	/* Default ring sizes */
-- 
2.25.1