linux-kernel - Re: [PATCH 3/3] net: phy: at803x: add qca8081 fifo reset on the link down

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Message-ID: <49f8ca40-e079-ad00-256e-08a61ffced22@quicinc.com>
Date:   Sat, 1 Jul 2023 23:44:34 +0800
From:   Jie Luo <quic_luoj@...cinc.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     <hkallweit1@...il.com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <linux@...linux.org.uk>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] net: phy: at803x: add qca8081 fifo reset on the link
 down



On 7/1/2023 10:34 PM, Andrew Lunn wrote:
>> Hi Andrew,
>> This block includes MII and MMD1 registers, which mainly configure the PLL
>> clocks, reset and calibration of the interface sgmii, there is no related
>> Clause 73 control register in this block.
> 
> O.K. What does it have in the MII ID registers? Does Linux think it is
> a PHY and instantiating an generic PHY driver for it?
> 
> 	Andrew
Hi Andrew,
it is the PLL related registers, there is no PHY ID existed in MII 
register 2, 3 of this block, so it can't be instantiated as the generic 
PHY device.