linux-kernel - Re: [PATCH v2 4/5] net: hpe: Add GXP UMAC Driver

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Message-ID: <e50fe51e-5a81-4aa2-9f77-4314dc578f84@lunn.ch>
Date:   Thu, 10 Aug 2023 03:54:36 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Hawkins, Nick" <nick.hawkins@....com>
Cc:     "christophe.jaillet@...adoo.fr" <christophe.jaillet@...adoo.fr>,
        "simon.horman@...igine.com" <simon.horman@...igine.com>,
        "Verdun, Jean-Marie" <verdun@....com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/5] net: hpe: Add GXP UMAC Driver

> After discussing with the ASIC team:
> The vendor IP in our ASIC performs a parallel GMII to serial SGMII

Which vendor ? Is it the Synopsys DesignWare XPCS? If so, take a look
at drivers/net/pcs/pcs-xpcs.c. You will want to use that code.

If it is a different vendor, you can probably still use bits of that
code to implement a driver for the vendor IP.

	Andrew