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Date:   Sun, 3 Jan 2021 02:35:50 +0100
From:   Hauke Mehrtens <hauke@...ke-m.de>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        netdev@...r.kernel.org
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, davem@...emloft.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/2] net: dsa: lantiq_gswip: Enable GSWIP_MII_CFG_EN also
 for internal PHYs

On 1/3/21 2:25 AM, Martin Blumenstingl wrote:
> 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")
> Cc: stable@...r.kernel.org
> 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>

> ---
>   drivers/net/dsa/lantiq_gswip.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
> index 09701c17f3f6..5d378c8026f0 100644
> --- a/drivers/net/dsa/lantiq_gswip.c
> +++ b/drivers/net/dsa/lantiq_gswip.c
> @@ -1541,9 +1541,7 @@ static void gswip_phylink_mac_link_up(struct dsa_switch *ds, int port,
>   {
>   	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,
> 

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