netdev - Re: [PATCH v6 net-next 05/14] net: phy: marvell-88q2xxx: add driver for the Marvell 88Q2220 PHY

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Date: Wed, 14 Feb 2024 14:20:37 +0100
From: Gregor Herburger <gregor.herburger@...tq-group.com>
To: Dimitri Fedrau <dima.fedrau@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Stefan Eichenberger <eichest@...il.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 net-next 05/14] net: phy: marvell-88q2xxx: add driver
 for the Marvell 88Q2220 PHY

Hi Dimitri,

On Tue, Feb 13, 2024 at 10:39:44PM +0100, Dimitri Fedrau wrote:
>  static struct phy_driver mv88q2xxx_driver[] = {
>  	{
>  		.phy_id			= MARVELL_PHY_ID_88Q2110,
> @@ -255,12 +439,26 @@ static struct phy_driver mv88q2xxx_driver[] = {
>  		.get_sqi		= mv88q2xxx_get_sqi,
>  		.get_sqi_max		= mv88q2xxx_get_sqi_max,
>  	},
> +	{
> +		PHY_ID_MATCH_EXACT(PHY_ID_88Q2220_REVB0),

I tested the series on a 88Q2220 REV B1 (which is id 0x002b0b22). The
driver works fine on this revision.

I understand that in the Marvell API the initialization for Rev B0 and
B1 differ. For B0 some additional init sequence is executed. I did not look
into the details of this sequence. However this patch seems to work on
Rev B1.

Would you consider adding compatibility for Rev B1 and following? I
tested with:
		.phy_id			= MARVELL_PHY_ID_88Q2220,
		.phy_id_mask		= MARVELL_PHY_ID_MASK,

Otherwise:

Tested-by: Gregor Herburger <gregor.herburger@...tq-group.com>

Best regards
Gregor
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