2016-05-23 09:20:20 +00:00
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From 25eaa5d6483a5899e6bf48b47f762f05c186b4b6 Mon Sep 17 00:00:00 2001
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From: John Crispin <john@phrozen.org>
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Date: Fri, 22 Apr 2016 11:08:43 +0200
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Subject: [PATCH 080/102] net-next: mediatek: properly handle RGMII modes
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If an external Gigabit PHY is connected to either of the MACs we need to
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be able to tell the PHY to use a delay. Not doing so will result in heavy
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packet loss and/or data corruption when using PHYs such as the IC+ IP1001.
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We tell the PHY which MII delay mode to use via the devictree.
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The ethernet driver needs to be adapted to handle all 3 rgmii-*id modes
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in the same way as normal rgmii when setting up the MAC.
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: John Crispin <john@phrozen.org>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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2016-06-02 13:34:34 +00:00
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@@ -236,6 +236,9 @@ static int mtk_phy_connect(struct mtk_ma
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2016-05-23 09:20:20 +00:00
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return -ENODEV;
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switch (of_get_phy_mode(np)) {
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+ case PHY_INTERFACE_MODE_RGMII_TXID:
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+ case PHY_INTERFACE_MODE_RGMII_RXID:
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+ case PHY_INTERFACE_MODE_RGMII_ID:
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case PHY_INTERFACE_MODE_RGMII:
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ge_mode = 0;
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break;
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