AST2600 EVB eth0 (MAC1) Issue

[Graeme Gregory]

On 23/09/2021 10:09, Troy Lee wrote:
> Hi Gaeme,
>
> Which soc revision and evb board revision are you using?
> Can you try to use phy-mode = "rgmii-rxid" for eth0/1 in your dts?
>
> Thanks,
> Troy Lee

Hi Troy,

Soc Rev:-

U-Boot 2019.04-00083-ge5902174d9-dirty (Sep 22 2021 - 15:10:03 +0000)

SOC: AST2600-A1


EVB Rev:-

AST2600-DDR4 EVB V1.4


phy-mode = "rgmii-rxid" instead of "rgmii" improves the issue and I now 
get DHCP on that interface, but packet loss is still hight compared to 
eth1 (MAC2).

eth0
ping -f 192.168.222.119
PING 192.168.222.119 (192.168.222.119) 56(84) bytes of data.
.............................................................................................................................................................................................................................................................................................................................^C
--- 192.168.222.119 ping statistics ---
597 packets transmitted, 330 received, 44.7236% packet loss, time 6775ms
rtt min/avg/max/mdev = 0.078/809.845/3266.263/1099.208 ms, pipe 205, 
ipg/ewma 11.367/30.024 ms

eth1
ping -f 192.168.222.30
[sudo] password for ggregory:
PING 192.168.222.30 (192.168.222.30) 56(84) bytes of data.
.^C
--- 192.168.222.30 ping statistics ---
50591 packets transmitted, 50590 received, 0.00197664% packet loss, time 
5550ms
rtt min/avg/max/mdev = 0.083/0.105/0.816/0.004 ms, ipg/ewma 0.109/0.104 ms

Thanks

Graeme

>> -----Original Message-----
>> From: openbmc <openbmc-
>> bounces+troy_lee=aspeedtech.com at lists.ozlabs.org> On Behalf Of Graeme
>> Gregory
>> Sent: Wednesday, September 22, 2021 11:49 PM
>> To: OpenBMC Maillist <openbmc at lists.ozlabs.org>
>> Subject: AST2600 EVB eth0 (MAC1) Issue
>>
>> Hi,
>>
>> I know A0 versions of the AST2600 had an issue where eth0 was not working,
>> but the errata indicates this is fixed in later revisions.
>>
>> I am seeing an issue on the EVB board though where eth0 (MAC1) is not
>> functional. The other three ports all function as expected.
>>
>> On my DHCP host machine I can see DHCP requests from the AST2600, and
>> replies are sent. Looking at /proc/interrupts it looks very much like no IRQs
>> are ever generated for incoming packets.
>>
>> Thanks
>>
>> Graeme
>>