netdev - Re: [PATCH net-next 2/2] net: phy: DP83822: Add ability to advertise Fiber connection

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Message-ID: <20200514185217.GX499265@lunn.ch>
Date:   Thu, 14 May 2020 20:52:17 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Dan Murphy <dmurphy@...com>
Cc:     f.fainelli@...il.com, hkallweit1@...il.com, davem@...emloft.net,
        robh@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: phy: DP83822: Add ability to advertise
 Fiber connection

> +static int dp83822_config_init(struct phy_device *phydev)
> +{
> +	struct dp83822_private *dp83822 = phydev->priv;
> +	int err = 0;
> +
> +	if (dp83822->fx_enabled) {
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
> +				 phydev->supported);
> +		linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
> +				 phydev->advertising);
> +
> +		/*  Auto negotiation is not available in fiber mode */
> +		phydev->autoneg = AUTONEG_DISABLE;
> +		phydev->speed = SPEED_100;
> +		phydev->duplex = DUPLEX_FULL;

Hi Dan

This is normally determined by reading the ability registers,
genphy_read_abilities(). When strapped to fibre mode, does it still
indicate all the usual copper capabilities, which it can not actually
do?

	Andrew