Date: Tue, 14 Mar 2017 00:11:17 +0100
From: Andrew Lunn <andrew@lunn.ch>
To: sean.wang@mediatek.com
Cc: f.fainelli@gmail.com, vivien.didelot@savoirfairelinux.com,
        matthias.bgg@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com,
        devicetree@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        davem@davemloft.net, Landen.Chao@mediatek.com, keyhaede@gmail.com,
        objelf@gmail.com
Subject: Re: [PATCH net-next 4/4] net-next: dsa: add dsa support for Mediatek
 MT7530 switch
Message-ID: <20170313231117.GF14183@lunn.ch>
References: <1489421488-300-1-git-send-email-sean.wang@mediatek.com>
 <1489421488-300-5-git-send-email-sean.wang@mediatek.com>
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> +static int
> +mt7530_setup(struct dsa_switch *ds)
> +{
> +	struct mt7530_priv *priv = ds->priv;
> +	int ret, i, phy_mode;
> +	u8  cpup_mask = 0;
> +	u32 id, val;
> +	struct regmap *regmap;
> +
> +	/* Make sure that cpu port specfied on the dt is appropriate */
> +	if (!dsa_is_cpu_port(ds, MT7530_CPU_PORT)) {
> +		dev_err(priv->dev, "port not matched with the CPU port\n");
> +		return -EINVAL;
> +	}
> +
> +	regmap = devm_regmap_init(ds->dev, NULL, priv,
> +				  &mt7530_regmap_config);
> +	if (IS_ERR(regmap))
> +		dev_warn(priv->dev, "phy regmap initialization failed");
> +
> +	phy_mode = of_get_phy_mode(ds->ports[ds->dst->cpu_port].dn);
> +	if (phy_mode < 0) {
> +		dev_err(priv->dev, "Can't find phy-mode for master device\n");
> +		return phy_mode;
> +	}
> +	dev_info(priv->dev, "phy-mode for master device = %x\n", phy_mode);

Hi Sean

It is not documented in the binding that a phy-mode is mandatory for
the cpu port.

    Andrew