We need to use PL based 1G Ethernet on Zynq Ultrascale + MPSoC platform (ZCU102 evaluation board) with Petalinux version 2019.1. The ethernet link is not working as expected.
The block diagram of the design is shown below. The GEM0 of the PS is connected to 1G Ethernet PCS/PMA V16.1 IP Core (configured in 1000BaseX mode with auto-negotiation enabled) in the PL section. The MDIO address is configured as 0x9. Copper SFP (FCLF8521-3) is jacked in the corresponding SFP cage.
The ping test in the U-Boot is working fine. Please see the bellow log (link partner IP address 192.168.1.1):
ZynqMP> setenv ethact eth0 ZynqMP> setenv ipaddr 192.168.1.2 ZynqMP> ping 192.168.1.1 Using ethernet@ff0b0000 device host 192.168.1.1 is alive ZynqMP> mii dump 9 0-1 0. (1140) -- PHY control register -- (8000:0000) 0.15 = 0 reset (4000:0000) 0.14 = 0 loopback (2040:0040) 0. 6,13 = b10 speed selection = 1000 Mbps (1000:1000) 0.12 = 1 A/N enable (0800:0000) 0.11 = 0 power-down (0400:0000) 0.10 = 0 isolate (0200:0000) 0. 9 = 0 restart A/N (0100:0100) 0. 8 = 1 duplex = full (0080:0000) 0. 7 = 0 collision test enable (003f:0000) 0. 5- 0 = 0 (reserved) 1. (01ec) -- PHY status register -- (8000:0000) 1.15 = 0 100BASE-T4 able (4000:0000) 1.14 = 0 100BASE-X full duplex able (2000:0000) 1.13 = 0 100BASE-X half duplex able (1000:0000) 1.12 = 0 10 Mbps full duplex able (0800:0000) 1.11 = 0 10 Mbps half duplex able (0400:0000) 1.10 = 0 100BASE-T2 full duplex able (0200:0000) 1. 9 = 0 100BASE-T2 half duplex able (0100:0100) 1. 8 = 1 extended status (0080:0080) 1. 7 = 1 (reserved) (0040:0040) 1. 6 = 1 MF preamble suppression (0020:0020) 1. 5 = 1 A/N complete (0010:0000) 1. 4 = 0 remote fault (0008:0008) 1. 3 = 1 A/N able (0004:0004) 1. 2 = 1 link status (0002:0000) 1. 1 = 0 jabber detect (0001:0000) 1. 0 = 0 extended capabilities
However in linux the ethernet port is not working (please see the bellow log):
root@petalinux-bob:~# ifconfig eth0 192.168.1.2 up
root@petalinux-bob:~# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
^C
--- 192.168.1.1 ping statistics ---
20 packets transmitted, 0 packets received, 100% packet loss
root@petalinux-bob:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: Not reported
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 9
Transceiver: internal
Auto-negotiation: on
Link detected: no
root@petalinux-bob:~# ethtool -s eth0 speed 1000 duplex full autoneg off
root@petalinux-bob:~# [ 220.465733] macb ff0b0000.ethernet eth0: link up (-1/Half)
[ 220.471238] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
root@petalinux-bob:~# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
^C
--- 192.168.1.1 ping statistics ---
16 packets transmitted, 0 packets received, 100% packet loss
root@petalinux-bob:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: Not reported
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 9
Transceiver: internal
Auto-negotiation: off
Link detected: yesThe device tree used during petalinux-build is as below:
&gem0 {
local-mac-address = [00 0a 35 00 22 04];
phy-handle = <&phy9>;
phy9: phy@9 {
reg = <0x9>;
xlnx,phy-type = <5>;
};
};
What could be possible reason of the following :
1. Why the link is not getting detected when auto-negotiation is enabled for eth0?
2. Why ping is failing though link is established in case of auto-negotiation disabled case?
Thanks, Prasanta
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