IMXQXP Ethernet not getting ping at 1000Mbps

[_asif_muhammed_]

Hi,

I have configured ethernet on IMX8QXP based custom board.I am able to get eth0 interface and am able to get ping properly at 100Mbps. But when I tried with 1000Mbps, I am not able to get ping. 

The eth phy I am using is Micrel KSZ9021RNI

The following is my dtb configuration

&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fec1>;
phy-mode = "rgmii";
// phy-mode = "rmii";

phy-handle = <&ethphy0>;
fsl,magic-packet;
nvmem-cells = <&fec_mac0>;
nvmem-cell-names = "mac-address";
// rx-internal-delay-ps = <2000>;
status = "okay";

mdio {
#address-cells = <1>;
#size-cells = <0>;

ethphy0: ethernet-phy@2 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0>;
//qca,disable-smarteee;
// vddio-supply = <&vddio0>;
// max-speed = <1000> ;
// vddio0: vddio-regulator {
// regulator-min-microvolt = <1800000>;
// regulator-max-microvolt = <1800000>;
// };
};
};
};

dmesg output is as follows:

fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx

The output of ethtool is as follows:

root@root:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Auto-negotiation: on
master-slave cfg: preferred slave
master-slave status: master
Port: Twisted Pair
PHYAD: 0
Transceiver: external
MDI-X: Unknown
Supports Wake-on: g
Wake-on: d
Link detected: yes

I am using Linux bsp imx_5.15.71_2.2.0.

@AldoG Do you have any insight to this issue. Please revert if you need any more info.

[AldoG]

Hello,

From the logs you have shared everything looks fine, have you looked into the signal integritty?
If everything is working correctly for low speed you configuration is correct, I would say that increasing drive strength help in some cases.

Best regards/Saludos,
Aldo.

[_asif_muhammed_]

Ok Aldo, I will try doing that and get back to you with the results