linux-kernel - Re: [PATCH net-next] net: phy: micrel: Add Fast link failure support for lan8842

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Message-ID: <20250916073427.xohv2cywonkfzp5k@DEN-DL-M31836.microchip.com>
Date: Tue, 16 Sep 2025 09:34:27 +0200
From: Horatiu Vultur <horatiu.vultur@...rochip.com>
To: Andrew Lunn <andrew@...n.ch>
CC: <hkallweit1@...il.com>, <linux@...linux.org.uk>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] net: phy: micrel: Add Fast link failure support
 for lan8842

The 09/15/2025 14:42, Andrew Lunn wrote:

Hi Andrew,

> 
> > +/**
> > + * LAN8814_PAGE_PCS - Selects Extended Page 0.
> > + *
> > + * This page appaers to control the fast link failure and there are different
> 
> appears.

Good catch.

> 
> And just curious. Why appears? Don't you have access to the data sheet?

I have access to datasheet. It is public here:
https://www.microchip.com/en-us/product/lan8842#Documentation

The problem is that now the register are described in a different
document and this one is not yet public. I have asked and they are
working to publish also this one but I can't say if it takes a day or a
month.

And the reason why I say it 'appears' is because I have seen most of the
registers are for debug and some timers.

> 
>         Andrew

-- 
/Horatiu