From b9dfb5636bc5eb9b783b88b8388dc7d1f41d6498 Mon Sep 17 00:00:00 2001 From: Weijie Gao Date: Tue, 17 Dec 2024 16:39:59 +0800 Subject: [PATCH 09/10] net: mediatek: don't enable GDMA cpu bridge unconditionally for NETSYSv3 Enable GDMA cpu bridge only when 10Gb interface is enabled for GMAC other than GMAC0, or when MT7988 internal switch is used. Signed-off-by: Weijie Gao --- drivers/net/mtk_eth.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) --- a/drivers/net/mtk_eth.c +++ b/drivers/net/mtk_eth.c @@ -1762,10 +1762,16 @@ static int mtk_eth_start(struct udevice if (priv->sw == SW_MT7988 && priv->gmac_id == 0) { mtk_gdma_write(priv, priv->gmac_id, GDMA_IG_CTRL_REG, GDMA_BRIDGE_TO_CPU); - } - mtk_gdma_write(priv, priv->gmac_id, GDMA_EG_CTRL_REG, - GDMA_CPU_BRIDGE_EN); + mtk_gdma_write(priv, priv->gmac_id, GDMA_EG_CTRL_REG, + GDMA_CPU_BRIDGE_EN); + } else if ((priv->phy_interface == PHY_INTERFACE_MODE_USXGMII || + priv->phy_interface == PHY_INTERFACE_MODE_10GBASER || + priv->phy_interface == PHY_INTERFACE_MODE_XGMII) && + priv->gmac_id != 0) { + mtk_gdma_write(priv, priv->gmac_id, GDMA_EG_CTRL_REG, + GDMA_CPU_BRIDGE_EN); + } } udelay(500);