Ethernet on LS1021A TWR ?

[JonhD]

Hello,

I have a LS1021A board (rev A0) on which I'm trying to have a simple ethernet connection. I've tried several SDK (uboot+kernel+dtb), each time I flash uboot on a SD card, boot it, load the kernel/rootfs/dtb by tftp (with any ethernet port) and start it.

Once Linux has started, I can't reach anymore the network, I can set ip address for each interface but impossible to establish a connection with my computer. I have the message

libphy: mdio@2d24000:00 - Link is Down

libphy: mdio@2d24000:00 - Link is Up - 1000/Full

When I plug/unplug the ethernet cable but it's strange that if I have a ping command while unplugging it I don't get the message "Network is unreachable". When I use Wireshark on my computer, most of the time there are no packets at all going through, but sometimes I can see the ping coming, my computer acknowledge it but on the board it is not received...

I've tried several configurations but none of them works. My switch configuration is the default one :
SW2 ON [1] OFF [0] OFF [0] OFF [0] ON [1] ON [1] ON [1] ON [1]
SW3 OFF ON ON OFF OFF ON OFF ON

I don't know if there is anything linked to the RCW. Here is my uboot env :

U-Boot 2015.01+ls1+g3281947 (Jul 30 2015 - 20:01:52)

CPU:   Freescale LayerScape LS1021E, Version: 2.0, (0x87081120)
Clock Configuration:
       CPU0(ARMV7):1000 MHz,
       Bus:300  MHz, DDR:800  MHz (1600 MT/s data rate),
Reset Configuration Word (RCW):
       00000000: 0608000a 00000000 00000000 00000000
       00000010: 70000000 00007900 e0025a00 21046000
       00000020: 00000000 00000000 00000000 20000000
       00000030: 00080000 881b7340 00000000 00000000
Board: LS1021ATWR
CPLD:  V2.0
PCBA:  V1.0
VBank: 0
I2C:   ready
DRAM:  1 GiB
Using SERDES1 Protocol: 112 (0x70)
Firmware 'Microcode version 0.0.1 for LS1021a r1.0' for 1021 V1.0
QE: uploading microcode 'Microcode for LS1021a r1.0' version 0.0.1
Flash: 128 MiB
MMC:   FSL_SDHC: 0
EEPROM: NXID v1
PCIe1: Root Complex no link, regs @ 0x3400000
PCIe2: Root Complex no link, regs @ 0x3500000
In:    serial
Out:   serial
Err:   serial
SEC0: RNG instantiated
SATA link 0 timeout.
AHCI 0001.0300 1 slots 1 ports ? Gbps 0x1 impl SATA mode
flags: 64bit ncq pm clo only pmp fbss pio slum part ccc
scanning bus for devices...
Found 0 device(s).
SCSI:  Net:   eTSEC2 is in sgmii mode.
eTSEC1, eTSEC2 [PRIME], eTSEC3
Hit any key to stop autoboot:  0
=>
=> pri
baudrate=115200
bootargs=root=/dev/ram0 rw console=ttyS0,115200
bootcmd=tftpboot 82000000 192.168.0.102:ls1021; bootm 82000000
bootdelay=3
bootm_boot_mode=sec
bootmd_old=cp.b 60300000 82000000 700000;cp.b 60a00000 88000000 2000000; cp.b 60200000 8f000000 10000;bootm 82000000 88000000 8f000000;
eth1addr=00:04:9f:03:e0:ff
eth2addr=00:04:9f:03:e1:00
ethact=eTSEC2
ethaddr=00:04:9f:03:e0:fe
ethprime=eTSEC2
fdt_high=0xcfffffff
gatewayip=192.168.0.1
initrd_high=0xcfffffff
ipaddr=192.168.0.103
netmask=255.255.255.0
scsidevs=0
serverip=192.168.0.102
stderr=serial
stdin=serial
stdout=serial

It's highly strange and I don't know at all what could cause this behaviour...

[yipingwang]

Please refer to this thread https://community.nxp.com/message/569401?commentID=569401#comment-569401 

Thanks,

Yiping

[tae-hyungkim]

ls1021a-twr eth0 has a bug.

Eth0 can not ping.

Try eth1.

[keestrommel]

I do not know whether this is a bug or a feature but most likely it can be fixed by the fix mentioned in my answer in the eth0 (eTSEC1) On A LS1021a-TWR Board thread.

[JonhD]

Hello Kees,

I've tried your solution but without any success... Thanks for your input

[dusanferbas]

Hi,

I have the IoT Gateway and the eth0 does not work too.
I checked RCW config, SW2.5 = OFF.
Does the bug come from the same area as the one for the Tower board?

The eth0 is multiplexed with SATA signals, which is controlled by the mux_sata_sgmii (MUX's SEL) from the sw_mux_sel0 (SW2.5). I read this from the CPLD source program. Anyone else is playing with the CPLD?

Note: eth1 is working.

[subramoniapilla]

I too face same issue. Eth0 is not pinging, whereas Eth1 and Eth2 seems working.

I am using SDK 2.0. Is the problem is fixed? Could you please point me the right fix.

[keestrommel]

Try my answer posted at the thread eth0 (eTSEC1) On A LS1021a-TWR Board

[JonhD]

Hi,

Thanks for your input, but I've tried every single ports without success.