From: Mason <slash.tmp@free•fr>
To: Mans Rullgard <mans@mansr•com>, Andrew Lunn <andrew@lunn•ch>
Cc: netdev <netdev@vger•kernel.org>,
Florian Fainelli <f.fainelli@gmail•com>,
Timur Tabi <timur@codeaurora•org>,
Sergei Shtylyov <sergei.shtylyov@cogentembedded•com>,
Zefir Kurtisi <zefir.kurtisi@neratec•com>,
Martin Blumenstingl <martin.blumenstingl@gmail•com>,
Uwe Kleine-Konig <u.kleine-koenig@pengutronix•de>,
Daniel Mack <zonque@gmail•com>,
Sebastian Frias <sf84@laposte•net>
Subject: Re: Ethernet not working on a different SoC with same eth HW
Date: Fri, 4 Nov 2016 15:13:45 +0100 [thread overview]
Message-ID: <581C9799.3040101@free.fr> (raw)
In-Reply-To: <yw1xtwbnjq88.fsf@unicorn.mansr.com>
On 04/11/2016 15:04, Måns Rullgård wrote:
> Andrew Lunn <andrew@lunn•ch> writes:
>
>>> Considering the ethernet DT bindings:
>>>
>>> https://www.kernel.org/doc/Documentation/devicetree/bindings/net/ethernet.txt
>>>
>>> Specifically, phy-mode values "rgmii", "rgmii-id", "rgmii-rxid", "rgmii-txid".
>>>
>>> Assuming that "rxid" (rx internal delay) and "rx clock delay" are
>>> in fact the same concept with different names, do you agree that
>>> it would be unexpected for "rgmii rx clock delay" to be enabled
>>> when a DTB specifies "rgmii" or "rgmii-txid" ?
>>
>> I agree with you. But fixing it is likely to break boards which
>> currently have "rgmii", but actually need the delay in order to work.
>
> Does the internal delay here refer to the PHY or the MAC? It's a
> property of the MAC node after all.
Isn't there a one-to-one correspondence between MAC and PHY?
Can a MAC be connected to multiple PHYs?
Can a PHY be connected to multiple MACs?
If it is a one-to-one correspondence, then whether the
property is specified in the MAC or PHY node is just a
matter of presentation, IMHO.
Regards.
next prev parent reply other threads:[~2016-11-04 14:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-31 15:29 Ethernet not working on a different SoC with same eth HW Mason
2016-10-31 15:37 ` Andrew Lunn
2016-10-31 15:48 ` Mason
2016-10-31 15:53 ` Andrew Lunn
2016-10-31 16:28 ` Mason
2016-11-04 13:01 ` Mason
2016-11-04 13:40 ` Måns Rullgård
2016-11-04 13:51 ` Mason
2016-11-04 13:57 ` Andrew Lunn
2016-11-04 14:01 ` Sebastian Frias
2016-11-04 14:04 ` Måns Rullgård
2016-11-04 14:13 ` Mason [this message]
2016-11-04 14:22 ` Andrew Lunn
2016-11-04 15:05 ` Måns Rullgård
2016-11-04 15:17 ` Andrew Lunn
2016-11-04 15:22 ` Måns Rullgård
2016-11-04 16:45 ` Florian Fainelli
2016-11-04 16:55 ` Måns Rullgård
2016-11-04 17:06 ` Mason
2016-10-31 15:39 ` Andrew Lunn
2016-11-08 15:41 ` Mason
2016-11-09 17:38 ` Mason
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