diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/762-net-ethernet-mediatek-Enable-GDM-GDMA_DROP_ALL-mode.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/762-net-ethernet-mediatek-Enable-GDM-GDMA_DROP_ALL-mode.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/762-net-ethernet-mediatek-Enable-GDM-GDMA_DROP_ALL-mode.patch b/target/linux/generic/backport-5.4/762-net-ethernet-mediatek-Enable-GDM-GDMA_DROP_ALL-mode.patch new file mode 100644 index 0000000000..b8c40ef665 --- /dev/null +++ b/target/linux/generic/backport-5.4/762-net-ethernet-mediatek-Enable-GDM-GDMA_DROP_ALL-mode.patch @@ -0,0 +1,33 @@ +From: MarkLee <Mark-MC.Lee@mediatek.com> +Date: Wed, 13 Nov 2019 10:38:44 +0800 +Subject: [PATCH] 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: MarkLee <Mark-MC.Lee@mediatek.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -2310,6 +2310,8 @@ static int mtk_stop(struct net_device *d + if (!refcount_dec_and_test(ð->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(ð->tx_napi); +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -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)) |