netdev - Re: [PATCH v2 5/5] net: dsa: add support for mv88e6250

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Date:   Fri, 24 May 2019 16:27:28 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Rasmus Villemoes <Rasmus.Villemoes@...vas.se>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 5/5] net: dsa: add support for mv88e6250

> @@ -4841,6 +4910,10 @@ static const struct of_device_id mv88e6xxx_of_match[] = {
>  		.compatible = "marvell,mv88e6190",
>  		.data = &mv88e6xxx_table[MV88E6190],
>  	},
> +	{
> +		.compatible = "marvell,mv88e6250",
> +		.data = &mv88e6xxx_table[MV88E6250],
> +	},
>  	{ /* sentinel */ },
>  };

Ah, yes. I had not thought about that. A device at address 0 would be
found, but a device at address 16 would be missed.

Please add this compatible string to Documentation/devicetree/bindings/net/dsa/marvell.txt 

> +++ b/drivers/net/dsa/mv88e6xxx/global1.c
> @@ -182,6 +182,25 @@ int mv88e6185_g1_reset(struct mv88e6xxx_chip *chip)
>  	return mv88e6185_g1_wait_ppu_polling(chip);
>  }
>  
> +int mv88e6250_g1_reset(struct mv88e6xxx_chip *chip)
> +{
> +	u16 val;
> +	int err;
> +
> +	/* Set the SWReset bit 15 */
> +	err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_CTL1, &val);
> +	if (err)
> +		return err;
> +
> +	val |= MV88E6XXX_G1_CTL1_SW_RESET;
> +
> +	err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_CTL1, val);
> +	if (err)
> +		return err;
> +
> +	return mv88e6xxx_g1_wait_init_ready(chip);
> +}

It looks like you could refactor mv88e6352_g1_reset() to call
this function, and then mv88e6352_g1_wait_ppu_polling(chip);

Otherwise, this looks good.

   Andrew