[OpenWrt-Devel] ar934x+ar8327v4

John Crispin blogic at openwrt.org
Fri Dec 5 04:49:17 EST 2014

its your lucky day, according to the DHL website my RB2011UiAS-2HnD-IN
will arrive in the next 2-3 hours :)

On 05/12/2014 10:21, Chris Green wrote:
> This sounds very like the bug #18401 I have raised for my
> RB2011UiAS-2HnD-IN.
> I have exactly the same problem of everything appearing to be detected
> OK and interfaces OK but eth0 simply doesn't do anything.
> I can try patches etc. if/when necessary.
> On Thu, Dec 04, 2014 at 10:13:52PM -0700, David Hutchison wrote:
>> Hi,
>> I ran into an issue with the Mikrotik Routerboard 951G's switch chip.
>> The new batch that we received use an updated ar8327 switch chip. The
>> switch chip would not function properly so I decided to load trunk and
>> utilize your patches.
>> dmesg shows the following:
>> switch0: Atheros AR8327 rev. 4 switch registered on ag71xx-mdio.0
>> libphy: ag71xx_mdio: probed
>> eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
>> ag71xx ag71xx.0 eth0: connected to PHY at ag71xx-mdio.0:00
>> [uid=004dd034, driver=Atheros AR8216/AR8236/AR8316]
>> It appears the updated ar8216.c with your changes have successfully
>> initialized the chip. In fact I can even use "swconfig dev switch0" to
>> create vlans etc.
>> If I create a port vlan ( eg. put ports 1 - 2 in vlan 1 ). I can plug
>> ethernet cables into each port and push data from port 1 to port 2
>> etc. It appears the switch driver is working correctly.
>> What is broken is the interface handle "eth0". It exposes eth0 and
>> ties it to the switch correctly ( as you can see from the above dmesg
>> output ). I then assign an IP address to eth0, however when I try to
>> ping a device connected to the switch. I get no response. There is no
>> arp traffic either. It's like data from the "eth0" handle doesn't know
>> how to route through the switch.
>> It appears like the switch hardware is working ( since port 1 can
>> communicate to port 2 ). However when "eth0" attempts to communicate
>> to a device on port 1, it doesn't work. The device on port 1 cannot
>> communicate with the "eth0" interface either.
>> I think your patches are specifically for the switch only. If that's
>> the case, then they are working. However, with your knowledge of
>> ar8327 could you point me into the direction of fixing the "eth0"
>> interface communicating to the ar8327 switch properly? Is there
>> something in ag71xx that I should be looking at? Could the ar8327
>> switch not be initializing properly? The probe is definitely finding
>> *AR8327* so that seems to be OK. I am guessing this is something
>> specific with the ar924x CPU + ar8327 switch chip. I'm open to any
>> suggestions :-)
>> -- Davey
>> _______________________________________________
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