netdev - Re: [PATCH v2 net-next] net: phy: add basic driver for NXP CBTX PHY

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Message-ID: <20230420201129.4fdc6c83@kernel.org>
Date:   Thu, 20 Apr 2023 20:11:29 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>
Cc:     Vladimir Oltean <vladimir.oltean@....com>, netdev@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH v2 net-next] net: phy: add basic driver for NXP CBTX PHY

On Tue, 18 Apr 2023 22:01:41 +0300 Vladimir Oltean wrote:
> The CBTX PHY is a Fast Ethernet PHY integrated into the SJA1110 A/B/C
> automotive Ethernet switches.
> 
> It was hoped it would work with the Generic PHY driver, but alas, it
> doesn't. The most important reason why is that the PHY is powered down
> by default, and it needs a vendor register to power it on.
> 
> It has a linear memory map that is accessed over SPI by the SJA1110
> switch driver, which exposes a fake MDIO controller. It has the
> following (and only the following) standard clause 22 registers:

Looking for Acks from PHY maintainers..
-- 
pw-bot: ur