net: ethernet: mtk_eth_soc: use larger burst size for QDMA TX

Improves tx performance
Signed-off-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NIlya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -2193,7 +2193,7 @@ static int mtk_start_dma(struct mtk_eth *eth)
 	if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
 		mtk_w32(eth,
 			MTK_TX_WB_DDONE | MTK_TX_DMA_EN |
-			MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO |
+			MTK_TX_BT_32DWORDS | MTK_NDP_CO_PRO |
 			MTK_RX_DMA_EN | MTK_RX_2B_OFFSET |
 			MTK_RX_BT_32DWORDS,
 			MTK_QDMA_GLO_CFG);

drivers/net/ethernet/mediatek/mtk_eth_soc.h

@@ -203,7 +203,7 @@
 #define MTK_RX_BT_32DWORDS	(3 << 11)
 #define MTK_NDP_CO_PRO		BIT(10)
 #define MTK_TX_WB_DDONE		BIT(6)
-#define MTK_DMA_SIZE_16DWORDS	(2 << 4)
+#define MTK_TX_BT_32DWORDS	(3 << 4)
 #define MTK_RX_DMA_BUSY		BIT(3)
 #define MTK_TX_DMA_BUSY		BIT(1)
 #define MTK_RX_DMA_EN		BIT(2)