Commit 8d66a818 authored by MarkLee's avatar MarkLee Committed by David S. Miller
Browse files

net: ethernet: mediatek: Enable GDM GDMA_DROP_ALL mode 



Enable GDM GDMA_DROP_ALL mode to drop all packet during the
stop operation. This is recommended by the mt762x HW design
to drop all packet from GMAC before stopping PDMA.

Signed-off-by: default avatarMarkLee <Mark-MC.Lee@mediatek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5ac9eda0

drivers/net/ethernet/mediatek/mtk_eth_soc.c

+2 −0
Original line number Diff line number Diff line
@@ -2279,6 +2279,8 @@ static int mtk_stop(struct net_device *dev) 
	if (!refcount_dec_and_test(&eth->dma_refcnt))

		return 0;



	mtk_gdm_config(eth, MTK_GDMA_DROP_ALL);



	mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);

	mtk_rx_irq_disable(eth, MTK_RX_DONE_INT);

	napi_disable(&eth->tx_napi);

drivers/net/ethernet/mediatek/mtk_eth_soc.h

+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ 
#define MTK_GDMA_TCS_EN		BIT(21)

#define MTK_GDMA_UCS_EN		BIT(20)

#define MTK_GDMA_TO_PDMA	0x0

#define MTK_GDMA_DROP_ALL       0x7777



/* Unicast Filter MAC Address Register - Low */

#define MTK_GDMA_MAC_ADRL(x)	(0x508 + (x * 0x1000))

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