netdev - Re: [PATCH v2] net: phy: add Maxlinear GPY115/21x/24x driver

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Message-ID: <YLoZWho/5a60wqPu@lunn.ch>
Date:   Fri, 4 Jun 2021 14:15:22 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Xu Liang <lxu@...linear.com>
Cc:     hkallweit1@...il.com, netdev@...r.kernel.org, davem@...emloft.net,
        kuba@...nel.org, vee.khee.wong@...ux.intel.com,
        linux@...linux.org.uk, hmehrtens@...linear.com,
        tmohren@...linear.com
Subject: Re: [PATCH v2] net: phy: add Maxlinear GPY115/21x/24x driver

> +config MXL_GPHY
> +	tristate "Maxlinear PHYs"
> +	help
> +	  Support for the Maxlinear GPY115, GPY211, GPY212, GPY215,
> +	  GPY241, GPY245 PHYs.

Do these PHYs have unique IDs in register 2 and 3? What is the format
of these IDs?

The OUI is fixed. But often the rest is split into two. The higher
part indicates the product, and the lower part is the revision. We
then have a struct phy_driver for each product, and the mask is used
to match on all the revisions of the product.

     Andrew