SDK ping sample fails on iMX6DL

[andreaskarlsson]

Objectives is the get the ENET driver up and running.

1.  I have an SABRE SD board rev c with an imx6DL

2. I've built the platform SDK with the Sourcery toolchain  , ./tools/build_sdk -clean -t mx6sdl -b smart_device -v c

3. I've run the ping.elf

4. The Link come up

Now here is the porblem

5. I can't see any frames getting sent, it looks like the first thing that happens is that lwIP sends an ARP, but I fail to see that on wireshark

and my laptop from which I try to ping the SabreSD say destination is unreachable.

I've build the LTIB U-boot. From there ping works fine.

WHat can be wrong in the SDK ENET driver?

regards

Andreas

[Yuri]

  Please connect the i.MX6 board to a router, the ping test requires DHCP. 

Have a great day,
Yuri

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[andreaskarlsson · Accepted solution]

I've got it working using static IP, change the ping code to use static.

The issues were, due to using a 100Mbit switch I triggered 2 SDK issues.

enet_drv.c

1. The link status prints use a faulty mask.

    if (((value>>14)&0x3) == 0x2)

         dev->status |= ENET_STATUS_1000M;

    else if (((value>>14)&0x3) == 0x2)                           <- Should be 0x1

         dev->status |= ENET_STATUS_100M;

2. It is only configured for 1000M

    dev->enet_reg->ECR.U |= ENET_ETHER_EN | ENET_ETHER_SPEED_1000M | ENET_ETHER_LITTLE_ENDIAN;

I guess the MAC should use the PHY negotiated speed?

regards

Andreas

[andreaskarlsson]

For some reason it reports 10M bps when it should be 100M bps. I cant verify the output since it seems impossible to find the AR8031 manual online.

Any clues?

ENET AR8031 PHY: ID=4dd070

enet phy status 1: 796d

AR8031 reg 0x11 = 7c1c

ENET 1: [ FULL_DUPLEX ] [ connected ] [ 10M bps ]: