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- 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(+)
- --- 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_ma
- 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;
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