linux-kernel - [PATCH net,v3 1/2] net: ethernet: mediatek: Fix MT7629 missing GMII mode support

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Date:   Mon, 14 Oct 2019 15:15:17 +0800
From:   MarkLee <Mark-MC.Lee@...iatek.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Sean Wang <sean.wang@...iatek.com>,
        John Crispin <john@...ozen.org>,
        Nelson Chang <nelson.chang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Andrew Lunn <andrew@...n.ch>
CC:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Rene van Dorst <opensource@...rst.com>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        MarkLee <Mark-MC.Lee@...iatek.com>
Subject: [PATCH net,v3 1/2] net: ethernet: mediatek: Fix MT7629 missing GMII mode support

In the original design, mtk_phy_connect function will set ge_mode=1
if phy-mode is GMII(PHY_INTERFACE_MODE_GMII) and then set the correct
ge_mode to ETHSYS_SYSCFG0 register. This logic was broken after apply  
mediatek PHYLINK patch(Fixes tag), the new mtk_mac_config function will
not set ge_mode=1 for GMII mode hence the final ETHSYS_SYSCFG0 setting 
will be incorrect for mt7629 GMII mode. This patch add the missing logic
back to fix it.
			 
Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support")
Signed-off-by: MarkLee <Mark-MC.Lee@...iatek.com>
--
v2->v3:
* no change
v1->v2:
* no change
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index c61069340f4f..703adb96429e 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -261,6 +261,7 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
 		ge_mode = 0;
 		switch (state->interface) {
 		case PHY_INTERFACE_MODE_MII:
+		case PHY_INTERFACE_MODE_GMII:
 			ge_mode = 1;
 			break;
 		case PHY_INTERFACE_MODE_REVMII:
-- 
2.17.1