linux-kernel - [PATCH 5.4 39/92] net: dsa: lantiq_gswip: Enable GSWIP_MII_CFG

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Date:   Mon, 11 Jan 2021 14:01:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hauke Mehrtens <hauke@...ke-m.de>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.4 39/92] net: dsa: lantiq_gswip: Enable GSWIP_MII_CFG_EN also for internal PHYs

From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>

[ Upstream commit c1a9ec7e5d577a9391660800c806c53287fca991 ]

Enable GSWIP_MII_CFG_EN also for internal PHYs to make traffic flow.
Without this the PHY link is detected properly and ethtool statistics
for TX are increasing but there's no RX traffic coming in.

Fixes: 14fceff4771e51 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Suggested-by: Hauke Mehrtens <hauke@...ke-m.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Acked-by: Hauke Mehrtens <hauke@...ke-m.de>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/dsa/lantiq_gswip.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1522,9 +1522,7 @@ static void gswip_phylink_mac_link_up(st
 {
 	struct gswip_priv *priv = ds->priv;
 
-	/* Enable the xMII interface only for the external PHY */
-	if (interface != PHY_INTERFACE_MODE_INTERNAL)
-		gswip_mii_mask_cfg(priv, 0, GSWIP_MII_CFG_EN, port);
+	gswip_mii_mask_cfg(priv, 0, GSWIP_MII_CFG_EN, port);
 }
 
 static void gswip_get_strings(struct dsa_switch *ds, int port, u32 stringset,