netdev - ID of (former "National") TI's PHY DP83848

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Date:   Fri, 27 Apr 2018 13:51:04 +0200
From:   Juergen Borleis <jbe@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: ID of (former "National") TI's PHY DP83848

Hi,

I have worked on a DP83848 variant without an interrupt line. While at it, I 
read through all datasheets of existing variants of the DP83848 phy.

Here is what I've found so far:

+--------------+--------------+--------+-----+
| Variant      |    Phy ID    |  Note  | IRQ |
+--------------+--------------+--------+-----+
| DP83848H     |  0x20005c90  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848J     |  0x20005c90  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848K     |  0x20005c90  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848M     |  0x20005c90  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848T     |  0x20005c90  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848EP    |  0x20005c90  |        | YES |
+--------------+--------------+--------+-----+
| DP83848HT    |  0x20005c90  |        | YES |
+--------------+--------------+--------+-----+
| DP83848Q     |  0x20005ca2  |  MINI  | NO  |
+--------------+--------------+--------+-----+
| DP83848V     |  0x20005ca2  |        | YES |
+--------------+--------------+--------+-----+
| DP83848C     |  0x20005ca2  |        | YES |
+--------------+--------------+--------+-----+

"MINI" means a less pin count variant.
"IRQ"-"YES" means, the device has a interrupt line,
"IRQ"-"NO" means, the device has no interrupt line.

How to deal with interrupts, if the device itself has no interrupt line (and 
uses the same phy ID)? How to deal with the same Phy ID used for different 
devices and different features?

Cheers,
Juergen

PS: please keep me on CC as I'm not subscribed to the netdev list.

-- 
Pengutronix e.K.                             | Juergen Borleis             |
Industrial Linux Solutions                   | http://www.pengutronix.de/  |