From: Marek Vasut <marex@denx.de>
To: Andrew Lunn <andrew@lunn.ch>
Cc: netdev@vger.kernel.org, Heiner Kallweit <hkallweit1@gmail.com>,
Lukas Wunner <lukas@wunner.de>
Subject: Re: [PATCH 1/2] net: phy: micrel: Add KS8851 PHY support
Date: Sun, 3 Jan 2021 13:55:22 +0100 [thread overview]
Message-ID: <19fac48e-dd17-26d8-0ebc-c08b51876861@denx.de> (raw)
In-Reply-To: <X+ygLXjVd3rr8Vbf@lunn.ch>
On 12/30/20 4:43 PM, Andrew Lunn wrote:
> On Wed, Dec 30, 2020 at 01:53:57PM +0100, Marek Vasut wrote:
>> The KS8851 has a reduced internal PHY, which is accessible through its
>> registers at offset 0xe4. The PHY is compatible with KS886x PHY present
>> in Micrel switches, except the PHY ID Low/High registers are swapped.
>
> Can you intercept the reads in the KS8851 driver and swap them back
> again? The mv88e6xxx driver does something similar. The mv88e6393
> family of switches have PHYs with the Marvell OUI but no device ID. So
> the code traps these reads and provides an ID.
I would prefer to keep this as-is, since then the PHY driver can match
on these swapped IDs and discern the PHY from PHY present in the KS886x
switch.
next prev parent reply other threads:[~2021-01-03 12:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-30 12:53 [PATCH 1/2] net: phy: micrel: Add KS8851 PHY support Marek Vasut
2020-12-30 12:53 ` [PATCH 2/2] net: ks8851: Register MDIO bus and the internal PHY Marek Vasut
2020-12-30 16:00 ` Andrew Lunn
2021-01-03 12:58 ` Marek Vasut
2021-01-03 16:25 ` Andrew Lunn
2020-12-31 1:23 ` kernel test robot
2020-12-30 15:43 ` [PATCH 1/2] net: phy: micrel: Add KS8851 PHY support Andrew Lunn
2021-01-03 12:55 ` Marek Vasut [this message]
2021-01-03 16:55 ` Andrew Lunn
2021-01-03 18:44 ` Marek Vasut
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