linux-kernel - Re: [PATCH net-next v2 7/7] net: dsa: mv88e6xxx: enable support for 88E6361 switch

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Message-ID: <f8f60a03-b190-41ad-8b67-4c63fd43ae47@lunn.ch>
Date:   Fri, 19 May 2023 18:21:39 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     alexis.lothore@...tlin.com
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Richard Cochran <richardcochran@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, paul.arola@...us.com,
        scott.roberts@...us.com,
        Marek Behún <kabel@...nel.org>
Subject: Re: [PATCH net-next v2 7/7] net: dsa: mv88e6xxx: enable support for
 88E6361 switch

> @@ -421,9 +421,14 @@ phy_interface_t mv88e6390x_port_max_speed_mode(struct mv88e6xxx_chip *chip,
>  int mv88e6393x_port_set_speed_duplex(struct mv88e6xxx_chip *chip, int port,
>  				     int speed, int duplex)
>  {
> +	bool is_6361 =
> +		chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6361;
>  	u16 reg, ctrl;
>  	int err;
>  
> +	if (is_6361 && speed > 2500)
> +		return -EOPNOTSUPP;

I would move the comparison inside the if, so removing the ugly looking split is_6361 line.

> +
>  	if (speed == 200 && port != 0)
>  		return -EOPNOTSUPP;
>  
> @@ -506,8 +511,12 @@ int mv88e6393x_port_set_speed_duplex(struct mv88e6xxx_chip *chip, int port,
>  phy_interface_t mv88e6393x_port_max_speed_mode(struct mv88e6xxx_chip *chip,
>  					       int port)
>  {
> +	bool is_6361 =
> +		chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6361;
> +
>  	if (port == 0 || port == 9 || port == 10)
> -		return PHY_INTERFACE_MODE_10GBASER;
> +		return is_6361 ? PHY_INTERFACE_MODE_2500BASEX :
> +			PHY_INTERFACE_MODE_10GBASER;

Please see if you can rearrange this code as well.

Thanks
	Andrew