diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0080-net-next-mediatek-properly-handle-RGMII-modes.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.4/0080-net-next-mediatek-properly-handle-RGMII-modes.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0080-net-next-mediatek-properly-handle-RGMII-modes.patch b/target/linux/mediatek/patches-4.4/0080-net-next-mediatek-properly-handle-RGMII-modes.patch new file mode 100644 index 0000000000..a7dea77750 --- /dev/null +++ b/target/linux/mediatek/patches-4.4/0080-net-next-mediatek-properly-handle-RGMII-modes.patch @@ -0,0 +1,36 @@ +From 25eaa5d6483a5899e6bf48b47f762f05c186b4b6 Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Fri, 22 Apr 2016 11:08:43 +0200 +Subject: [PATCH 080/102] net-next: mediatek: properly handle RGMII modes + +If an external Gigabit PHY is connected to either of the MACs we need to +be able to tell the PHY to use a delay. Not doing so will result in heavy +packet loss and/or data corruption when using PHYs such as the IC+ IP1001. +We tell the PHY which MII delay mode to use via the devictree. + +The ethernet driver needs to be adapted to handle all 3 rgmii-*id modes +in the same way as normal rgmii when setting up the MAC. + +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: John Crispin <john@phrozen.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +index ab61789..76ecb1b 100644 +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -236,6 +236,9 @@ static int mtk_phy_connect(struct mtk_mac *mac) + return -ENODEV; + + switch (of_get_phy_mode(np)) { ++ case PHY_INTERFACE_MODE_RGMII_TXID: ++ case PHY_INTERFACE_MODE_RGMII_RXID: ++ case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII: + ge_mode = 0; + break; +-- +1.7.10.4 + |