From: Pavel Machek <pavel@ucw.cz>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Woojung.Huh@microchip.com, nathan.leigh.conrad@gmail.com,
vivien.didelot@savoirfairelinux.com, f.fainelli@gmail.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Tristram.Ha@micrel.com
Subject: Re: [PATCH] DSA support for Micrel KSZ8895
Date: Tue, 29 Aug 2017 09:45:47 +0200 [thread overview]
Message-ID: <20170829074547.GB31303@amd> (raw)
In-Reply-To: <20170828140927.GD10418@lunn.ch>
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On Mon 2017-08-28 16:09:27, Andrew Lunn wrote:
> > I may be confused here, but AFAICT:
> >
> > 1) Yes, it has standard layout when accessed over MDIO.
>
>
> Section 4.8 of the datasheet says:
>
> All the registers defined in this section can be also accessed
> via the SPI interface.
>
> Meaning all PHY registers can be access via the SPI interface. So you
> should be able to make a standard Linux MDIO bus driver which performs
> SPI reads.
As far as I can tell (and their driver confirms) -- yes, all those
registers can be accessed over the SPI, they are just shuffled
around... hence MDIO emulation code. I copied it from their code (see
the copyrights) so no, I don't believe there's nicer solution.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2017-08-29 7:45 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-16 7:55 DSA support for Micrel KSZ8895 Pavel Machek
2017-08-16 14:04 ` Andrew Lunn
2017-08-16 14:25 ` Woojung.Huh
2017-08-23 9:09 ` Pavel Machek
2017-08-23 12:42 ` Andrew Lunn
2017-08-23 21:48 ` Woojung.Huh
2017-08-28 10:14 ` Pavel Machek
2017-08-28 13:19 ` Andrew Lunn
2017-08-27 12:36 ` [PATCH] " Pavel Machek
2017-08-27 13:59 ` Andrew Lunn
2017-08-27 16:31 ` Andrew Lunn
2017-08-28 7:02 ` Pavel Machek
2017-08-28 14:09 ` Andrew Lunn
2017-08-28 14:47 ` Maxim Uvarov
2017-08-29 7:41 ` Pavel Machek
2017-08-29 12:26 ` Andrew Lunn
2017-08-29 21:15 ` Pavel Machek
2017-08-29 21:23 ` Florian Fainelli
2017-08-30 10:06 ` Maxim Uvarov
2017-08-29 7:45 ` Pavel Machek [this message]
2017-08-30 21:32 ` Tristram.Ha
2017-08-30 22:00 ` Andrew Lunn
2017-09-01 12:15 ` Pavel Machek
2017-09-01 22:18 ` Florian Fainelli
2017-09-02 15:40 ` Pavel Machek
2017-09-06 9:14 ` Maxim Uvarov
2017-09-06 16:47 ` Tristram.Ha
2017-09-06 17:09 ` Andrew Lunn
2017-08-27 16:44 ` Andrew Lunn
2017-08-28 6:40 ` Pavel Machek
2017-08-27 16:56 ` Florian Fainelli
2017-08-28 6:47 ` Pavel Machek
2017-08-27 22:03 ` Woojung.Huh
2017-08-29 15:33 ` kbuild test robot
2017-08-16 18:32 ` Pavel Machek
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