Fixed PHY Device Tree usage?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello,

We have a case of an hardware platform that uses the mvneta network
driver, but instead of the SoC being connected to a PHY, it's connected
directly to a switch, so my understanding is that there's no MDIO bus,
and we should have a kind of a "fake PHY" to make the mvneta driver
believe that the link is up, at a given speed.

Looking at this problem, I stumbled across the "fixed PHY" driver in
drivers/net/phy/fixed.c, which registers a fake "Fixed MDIO bus", and
then provides a fixed_phy_add() API to add one "fake" PHY. This seems
to fit my need, except that my ARM platform is obviously Device Tree
based, so I'm wondering what I should do. One option is to implement a
Device Tree binding for the fixed PHY driver (the exact DT binding
would have to be discussed), but I'm wondering whether describing a
fixed PHY in the DT is actually correct, because describing a fixed PHy
is not really describing the hardware, the hardware is actually a
switch.

Do you have some thoughts about this situation? Maybe there's already
some solutions that I'm not aware of?

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel Discussion]     [TCP Instrumentation]     [Ethernet Bridging]     [Linux Wireless Networking]     [Linux WPAN Networking]     [Linux Host AP]     [Linux WPAN Networking]     [Linux Bluetooth Networking]     [Linux ATH6KL Networking]     [Linux Networking Users]     [Linux Coverity]     [VLAN]     [Git]     [IETF Annouce]     [Linux Assembly]     [Security]     [Bugtraq]     [Yosemite Information]     [MIPS Linux]     [ARM Linux Kernel]     [ARM Linux]     [Linux Virtualization]     [Linux IDE]     [Linux RAID]     [Linux SCSI]