linux-kernel - Re: [PATCH net-next 5/5] drivers/net/phy: add driver for the onsemi NCN26000 10BASE-T1S PHY

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Message-ID: <Y7aS7GrjFDauGm9u@unreal>
Date:   Thu, 5 Jan 2023 11:05:48 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Piergiorgio Beruto <piergiorgio.beruto@...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>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, Oleksij Rempel <o.rempel@...gutronix.de>
Subject: Re: [PATCH net-next 5/5] drivers/net/phy: add driver for the onsemi
 NCN26000 10BASE-T1S PHY

On Wed, Jan 04, 2023 at 03:07:05PM +0100, Piergiorgio Beruto wrote:
> This patch adds support for the onsemi NCN26000 10BASE-T1S industrial
> Ethernet PHY. The driver supports Point-to-Multipoint operation without
> auto-negotiation and with link control handling. The PHY also features
> PLCA for improving performance in P2MP mode.
> 
> Signed-off-by: Piergiorgio Beruto <piergiorgio.beruto@...il.com>
> ---
>  MAINTAINERS                |   7 ++
>  drivers/net/phy/Kconfig    |   7 ++
>  drivers/net/phy/Makefile   |   1 +
>  drivers/net/phy/ncn26000.c | 171 +++++++++++++++++++++++++++++++++++++
>  4 files changed, 186 insertions(+)
>  create mode 100644 drivers/net/phy/ncn26000.c

<...>

> +static int ncn26000_config_aneg(struct phy_device *phydev)
> +{
> +	// Note: the NCN26000 supports only P2MP link mode. Therefore, AN is not
> +	// supported. However, this function is invoked by phylib to enable the
> +	// PHY, regardless of the AN support.

Please use C-style comments for multi lines blocks.

> +	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
> +	phydev->mdix = ETH_TP_MDI;
> +
> +	// bring up the link

Thanks