netdev - Re: [PATCH v4 net-next 5/5] net: phy: marvell-88q2xxx: add driver for the Marvell 88Q2220 PHY

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Message-ID: <20240108110844.GH132648@kernel.org>
Date: Mon, 8 Jan 2024 11:08:44 +0000
From: Simon Horman <horms@...nel.org>
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 v4 net-next 5/5] net: phy: marvell-88q2xxx: add driver
 for the Marvell 88Q2220 PHY

On Mon, Jan 08, 2024 at 10:37:00AM +0100, Dimitri Fedrau wrote:
> Add a driver for the Marvell 88Q2220. This driver allows to detect the
> link, switch between 100BASE-T1 and 1000BASE-T1 and switch between
> master and slave mode. Autonegoation is supported.

nit: Autonegotiation

> Signed-off-by: Dimitri Fedrau <dima.fedrau@...il.com>
> ---
>  drivers/net/phy/marvell-88q2xxx.c | 206 +++++++++++++++++++++++++++++-
>  include/linux/marvell_phy.h       |   1 +
>  2 files changed, 201 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/phy/marvell-88q2xxx.c b/drivers/net/phy/marvell-88q2xxx.c

...

> @@ -29,6 +36,42 @@
>  
>  #define MDIO_MMD_PCS_MV_RX_STAT			33328
>  
> +struct mmd_val {
> +	int devad;
> +	u32 regnum;
> +	u16 val;
> +};
> +
> +const struct mmd_val mv88q222x_revb0_init_seq0[] = {
> +	{ MDIO_MMD_PCS, 0x8033, 0x6801 },
> +	{ MDIO_MMD_AN, MDIO_AN_T1_CTRL, 0x0 },
> +	{ MDIO_MMD_PMAPMD, MDIO_CTRL1,
> +	  MDIO_CTRL1_LPOWER | MDIO_PMA_CTRL1_SPEED1000 },
> +	{ MDIO_MMD_PCS, 0xfe1b, 0x48 },
> +	{ MDIO_MMD_PCS, 0xffe4, 0x6b6 },
> +	{ MDIO_MMD_PMAPMD, MDIO_CTRL1, 0x0 },
> +	{ MDIO_MMD_PCS, MDIO_CTRL1, 0x0 },
> +};
> +
> +const struct mmd_val mv88q222x_revb0_init_seq1[] = {
> +	{ MDIO_MMD_PCS, 0xfe79, 0x0 },
> +	{ MDIO_MMD_PCS, 0xfe07, 0x125a },
> +	{ MDIO_MMD_PCS, 0xfe09, 0x1288 },
> +	{ MDIO_MMD_PCS, 0xfe08, 0x2588 },
> +	{ MDIO_MMD_PCS, 0xfe11, 0x1105 },
> +	{ MDIO_MMD_PCS, 0xfe72, 0x042c },
> +	{ MDIO_MMD_PCS, 0xfbba, 0xcb2 },
> +	{ MDIO_MMD_PCS, 0xfbbb, 0xc4a },
> +	{ MDIO_MMD_AN, 0x8032, 0x2020 },
> +	{ MDIO_MMD_AN, 0x8031, 0xa28 },
> +	{ MDIO_MMD_AN, 0x8031, 0xc28 },
> +	{ MDIO_MMD_PCS, 0xffdb, 0xfc10 },
> +	{ MDIO_MMD_PCS, 0xfe1b, 0x58 },
> +	{ MDIO_MMD_PCS, 0xfe79, 0x4 },
> +	{ MDIO_MMD_PCS, 0xfe5f, 0xe8 },
> +	{ MDIO_MMD_PCS, 0xfe05, 0x755c },
> +};

nit: mv88q222x_revb0_init_seq0 and mv88q222x_revb0_init_seq1 seem
    to only be used in this file. Perhaps they should be static.

...