netdev - Re: [PATCH v3] net: phy: add Marvell 88X2222 transceiver support

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Date:   Wed, 3 Mar 2021 11:36:55 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Ivan Bornyakov <i.bornyakov@...rotek.ru>
Cc:     netdev@...r.kernel.org, system@...rotek.ru, andrew@...n.ch,
        hkallweit1@...il.com, davem@...emloft.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] net: phy: add Marvell 88X2222 transceiver support

Hi,

Mostly great, but just a couple more points.

On Wed, Mar 03, 2021 at 01:57:57PM +0300, Ivan Bornyakov wrote:
> +	adv = 0;
> +
> +	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
> +			      priv->supported))
> +		adv |= ADVERTISE_1000XFULL;
> +
> +	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
> +			      priv->supported))
> +		adv |= ADVERTISE_1000XPAUSE;
> +
> +	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
> +			      priv->supported))
> +		adv |= ADVERTISE_1000XPSE_ASYM;

You could use the helper:

	adv = linkmode_adv_to_mii_adv_x(priv->supported,
					ETHTOOL_LINK_MODE_1000baseX_Full_BIT);

instead here. It's also a bit weird to set the advertisement based off
a "supported" mask.

> +	linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, supported);

Does the PHY support backplane links?

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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