Processor Expert SoftwareのトピックRe: imx8mp eqos ethernet up/down issue

imx8mp eqos ethernet up/down issue

vprajapati — Thu, 16 Jan 2025 11:10:13 GMT

I am working on a imx8mp based custom board. I am using single ethernet of eqos port and KSZ9131 ethernet Phy. I have disabled feos and configured eqos RGMI interface as per our schematic design.

&eqos { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_eqos>; phy-mode = "rgmii-id"; phy-handle = <&ethphy0>; status = "okay"; mdio { compatible = "snps,dwmac-mdio"; #address-cells = <1>; #size-cells = <0>; ethphy0: ethernet-phy@3 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <3>; eee-broken-1000t; reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>; reset-assert-us = <10000>; reset-deassert-us = <80000>; }; }; }; &fec { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_fec>; phy-mode = "rgmii-id"; phy-handle = <&ethphy1>; fsl,magic-packet; status = "disabled"; mdio { #address-cells = <1>; #size-cells = <0>; ethphy1: ethernet-phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <1>; eee-broken-1000t; reset-gpios = <&gpio4 2 GPIO_ACTIVE_LOW>; reset-assert-us = <10000>; reset-deassert-us = <80000>; realtek,aldps-enable; realtek,clkout-disable; }; }; }; pinctrl_eqos: eqosgrp { fsl,pins = < MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC 0x2 MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO 0x2 MX8MP_IOMUXC_ENET_RD0__ENET_QOS_RGMII_RD0 0x90 MX8MP_IOMUXC_ENET_RD1__ENET_QOS_RGMII_RD1 0x90 MX8MP_IOMUXC_ENET_RD2__ENET_QOS_RGMII_RD2 0x90 MX8MP_IOMUXC_ENET_RD3__ENET_QOS_RGMII_RD3 0x90 MX8MP_IOMUXC_ENET_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK 0x90 MX8MP_IOMUXC_ENET_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x90 MX8MP_IOMUXC_ENET_TD0__ENET_QOS_RGMII_TD0 0x16 MX8MP_IOMUXC_ENET_TD1__ENET_QOS_RGMII_TD1 0x16 MX8MP_IOMUXC_ENET_TD2__ENET_QOS_RGMII_TD2 0x16 MX8MP_IOMUXC_ENET_TD3__ENET_QOS_RGMII_TD3 0x16 MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x16 MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x16 MX8MP_IOMUXC_SAI2_RXC__GPIO4_IO22 0x10 >; }; pinctrl_fec: fecgrp { fsl,pins = < MX8MP_IOMUXC_SAI1_RXD2__ENET1_MDC 0x2 MX8MP_IOMUXC_SAI1_RXD3__ENET1_MDIO 0x2 MX8MP_IOMUXC_SAI1_RXD4__ENET1_RGMII_RD0 0x90 MX8MP_IOMUXC_SAI1_RXD5__ENET1_RGMII_RD1 0x90 MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2 0x90 MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3 0x90 MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC 0x90 MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL 0x90 MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0 0x16 MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1 0x16 MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2 0x16 MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3 0x16 MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL 0x16 MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC 0x16 MX8MP_IOMUXC_SAI1_RXD0__GPIO4_IO02 0x10 >; };

I am facing an issue that the board sometimes gets an IP address and sometimes doesnot get IP. When I checked dmesg, I found that sometimes the ethernet link goes up and down continuously and getting below logs.

[ 1603.431182] 8021q: adding VLAN 0 to HW filter on device eth0 [ 1603.431215] imx-dwmac 30bf0000.ethernet eth0: Timeout accessing MAC_VLAN_Tag_Filter [ 1606.495340] imx-dwmac 30bf0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off [ 1611.997123] imx-dwmac 30bf0000.ethernet eth0: Reset adapter. [ 1612.018437] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue stop [ 1612.021049] imx-dwmac 30bf0000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 1612.172780] imx-dwmac 30bf0000.ethernet eth0: PHY [stmmac-1:03] driver [Microchip KSZ9131 Gigabit PHY] (irq=POLL) [ 1612.172817] imx-dwmac 30bf0000.ethernet eth0: No Safety Features support found [ 1612.376691] imx-dwmac 30bf0000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported [ 1612.377609] imx-dwmac 30bf0000.ethernet eth0: registered PTP clock [ 1612.377777] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue start [ 1612.377785] imx-dwmac 30bf0000.ethernet eth0: configuring for phy/rgmii-id link mode [ 1612.380276] 8021q: adding VLAN 0 to HW filter on device eth0 [ 1612.380312] imx-dwmac 30bf0000.ethernet eth0: Timeout accessing MAC_VLAN_Tag_Filter [ 1615.455292] imx-dwmac 30bf0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off [ 1620.961118] imx-dwmac 30bf0000.ethernet eth0: Reset adapter. [ 1620.973075] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue stop [ 1620.978104] imx-dwmac 30bf0000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 1621.124776] imx-dwmac 30bf0000.ethernet eth0: PHY [stmmac-1:03] driver [Microchip KSZ9131 Gigabit PHY] (irq=POLL) [ 1621.124814] imx-dwmac 30bf0000.ethernet eth0: No Safety Features support found [ 1621.328999] imx-dwmac 30bf0000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported [ 1621.329195] imx-dwmac 30bf0000.ethernet eth0: registered PTP clock [ 1621.329503] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue start [ 1621.329512] imx-dwmac 30bf0000.ethernet eth0: configuring for phy/rgmii-id link mode [ 1621.332051] 8021q: adding VLAN 0 to HW filter on device eth0 [ 1621.332085] imx-dwmac 30bf0000.ethernet eth0: Timeout accessing MAC_VLAN_Tag_Filter [ 1624.415398] imx-dwmac 30bf0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off [ 1629.917111] imx-dwmac 30bf0000.ethernet eth0: Reset adapter. [ 1629.933853] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue stop [ 1629.937071] imx-dwmac 30bf0000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 1630.088780] imx-dwmac 30bf0000.ethernet eth0: PHY [stmmac-1:03] driver [Microchip KSZ9131 Gigabit PHY] (irq=POLL) [ 1630.088817] imx-dwmac 30bf0000.ethernet eth0: No Safety Features support found [ 1630.292783] imx-dwmac 30bf0000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported [ 1630.293269] imx-dwmac 30bf0000.ethernet eth0: registered PTP clock [ 1630.293429] imx-dwmac 30bf0000.ethernet eth0: FPE workqueue start [ 1630.293438] imx-dwmac 30bf0000.ethernet eth0: configuring for phy/rgmii-id link mode [ 1630.295842] 8021q: adding VLAN 0 to HW filter on device eth0 [ 1630.295875] imx-dwmac 30bf0000.ethernet eth0: Timeout accessing MAC_VLAN_Tag_Filter [ 1633.379042] imx-dwmac 30bf0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off

I have disabled TSN as guided in https://www.nxp.com/design/design-center/software/development-software/real-time-edge-software:REALTIME-EDGE-SOFTWARE.

I also try to disable VLAN Filtering, still getting the same issue. Sometimes reducing speed by "ethtool -s eth0 speed 100" works but not all times.

Can someone help me to understand the debug the issue.

Re: imx8mp eqos ethernet up/down issue

JosephAtNXP — Thu, 16 Jan 2025 18:47:51 GMT

Hi,

Thank you for your interest in NXP Semiconductor products,

What is the BSP that you used for your board?

I would disable VLAN filtering and IEEE capabilities so I can isolate the issue into the lower layers of HW. Conserving this methodology, I would try to to get an static IP to see if it's still happening.

The possible tests are board to board and board to router as well, with static IP and sending ping packets, also, try monitoring the PHY LINK STATUS, does it fail?

Do your RGMII probes matches the RGMII standard? There is often an electrical mismatch that leads to an issue with PHY link.

Regards

Re: imx8mp eqos ethernet up/down issue

vprajapati — Mon, 20 Jan 2025 11:10:56 GMT

Hi @JosephAtNXP

I am using Yocto Scarthgap 6.6.23-lts-next for imx8mp.

By default, the ethernet link is not detected.

root@ixm-ecoface:~# 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 Receive-only Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: Unknown! Duplex: Unknown! (255) Auto-negotiation: on master-slave cfg: preferred slave master-slave status: unknown Port: Twisted Pair PHYAD: 3 Transceiver: external MDI-X: on (auto) Supports Wake-on: ug Wake-on: d Current message level: 0x0000003f (63) drv probe link timer ifdown ifup Link detected: no root@ixm-ecoface:~#

Then I will set speed to 100 and it detects the link.

root@ixm-ecoface:~# ethtool -s eth0 speed 100 root@ixm-ecoface:~# 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 Receive-only Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 100baseT/Half 100baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 100Mb/s Duplex: Full Auto-negotiation: on master-slave cfg: preferred slave master-slave status: slave Port: Twisted Pair PHYAD: 3 Transceiver: external MDI-X: on (auto) Supports Wake-on: ug Wake-on: d Current message level: 0x0000003f (63) drv probe link timer ifdown ifup Link detected: yes

For electrical mismatch, the hardware team is checking the RGMII specifications.

I try to disable the VLAN Filtering by disabling following modules CONFIG_VLAN_8021Q, CONFIG_VLAN_8021Q_GVRP and CONFIG_VLAN_8021Q_MVRP. However, still it is not disabled.

Regarding IEEE capabilities, can you guide me how to disable that?

Re: imx8mp eqos ethernet up/down issue

JosephAtNXP — Wed, 22 Jan 2025 00:54:12 GMT

Hi @vprajapati,

You could quickly try to confirm it detecting a LINK STATUS through MDIO reading in U-boot and try to ping as well get an IP in U-boot. Because U-boot networking capabilities are really low level, it would mean that your HW and SW init in U-boot is correct and then we would move to Linux.

Regards,

Re: imx8mp eqos ethernet up/down issue

vprajapati — Tue, 28 Jan 2025 07:35:53 GMT

Okay, I added an ethernet support in u-boot. It seems like auto-negotiation is not working properly. Below is my u-boot environmrnt.

u-boot-ecoface=> arch=arm baudrate=115200 board=imx8mp_evk board_name=IXM-ECOFACE board_rev=ECOFACE_1_0 boot_a_script=load ${devtype} ${devnum}:${distro_bootpart} ${scriptaddr} ${prefix}${script}; source ${scriptaddr} boot_efi_binary=load ${devtype} ${devnum}:${distro_bootpart} ${kernel_addr_r} efi/boot/bootaa64.efi; if fdt addr -q ${fdt_addr_r}; then bootefi ${kernel_addr_r} ${fdt_addr_r};else bootefi ${kernel_addr_i boot_efi_bootmgr=if fdt addr -q ${fdt_addr_r}; then bootefi bootmgr ${fdt_addr_r};else bootefi bootmgr;fi boot_extlinux=sysboot ${devtype} ${devnum}:${distro_bootpart} any ${scriptaddr} ${prefix}${boot_syslinux_conf} boot_fdt=try boot_fit=no boot_net_usb_start=usb start boot_prefixes=/ /boot/ boot_script_dhcp=boot.scr.uimg boot_scripts=boot.scr.uimg boot.scr boot_syslinux_conf=extlinux/extlinux.conf boot_targets=usb0 mmc1 mmc2 bootcmd=run distro_bootcmd;run bsp_bootcmd bootcmd_mfg=run mfgtool_args;if iminfo ${initrd_addr}; then if test ${tee} = yes; then bootm ${tee_addr} ${initrd_addr} ${fdt_addr}; else booti ${loadaddr} ${initrd_addr} ${fdt_addr}; fi; else echo "Run; bootcmd_mmc1=devnum=1; run mmc_boot bootcmd_mmc2=devnum=2; run mmc_boot bootcmd_usb0=devnum=0; run usb_boot bootdelay=2 bootm_size=0x10000000 bootscript=echo Running bootscript from mmc ...; source bsp_bootcmd=echo Running BSP bootcmd ...; mmc dev ${mmcdev}; if mmc rescan; then if run loadbootscript; then run bootscript; else if run loadimage; then run mmcboot; else run netboot; fi; fi; fi; bsp_script=boot.scr console=ttymxc1,115200 cpu=armv8 distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done efi_dtb_prefixes=/ /dtb/ /dtb/current/ emmc_dev=2 eth1addr=46:f6:a7:1e:00:e9 ethact=ethernet@30bf0000 ethprime=eth1 fastboot_dev=mmc2 fdt_addr=0x43000000 fdt_addr_r=0x43000000 fdt_high=0xffffffffffffffff fdtcontroladdr=bced6280 fdtfile=ixm-ecoface.dtb gatewayip=192.168.1.1 image=Image initrd_addr=0x43800000 initrd_high=0xffffffffffffffff ipaddr=192.168.1.229 jh_clk= jh_mmcboot=setenv fdtfile ${jh_root_dtb};setenv jh_clk clk_ignore_unused mem=1920MB; if run loadimage; then run mmcboot; else run jh_netboot; fi; jh_netboot=setenv fdtfile ${jh_root_dtb}; setenv jh_clk clk_ignore_unused mem=1920MB; run netboot; jh_root_dtb=imx8mp-evk-root.dtb kboot=booti kernel_addr_r=0x40400000 load_efi_dtb=load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefix}${efi_fdtfile} loadaddr=0x40400000 loadbootscript=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${bsp_script}; loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr_r} ${fdtfile} loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image} mfgtool_args=setenv bootargs console=${console},${baudrate} rdinit=/linuxrc clk_ignore_unused mmc_boot=if mmc dev ${devnum}; then devtype=mmc; run scan_dev_for_boot_part; fi mmcargs=setenv bootargs ${jh_clk} ${mcore_clk} console=${console} root=${mmcroot} mmcautodetect=yes mmcboot=echo Booting from mmc ...; run mmcargs; if test ${boot_fit} = yes || test ${boot_fit} = try; then bootm ${loadaddr}; else if run loadfdt; then booti ${loadaddr} - ${fdt_addr_r}; else echo WARN: ; mmcdev=2 mmcpart=1 mmcroot=/dev/mmcblk2p2 rootwait rw mtdids=nand0=gpmi-nand nandfit_part=yes netargs=setenv bootargs ${jh_clk} ${mcore_clk} console=${console} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp netboot=echo Booting from net ...; run netargs; if test ${ip_dyn} = yes; then setenv get_cmd dhcp; else setenv get_cmd tftp; fi; ${get_cmd} ${loadaddr} ${image}; if test ${boot_fit} = yes || test ${boo; netmask=255.255.255.0 nodes=/busfreq /power-domains /soc@0/caam-sm@100000 /soc@0/bus@30000000/caam_secvio /soc@0/bus@30000000/caam-snvs@30370000 /soc@0/bus@30800000/flexspi_nand@30bb0000 /soc@0/bus@32c00000/mipi_dsi@32e60000 prepare_mcore=setenv mcore_clk clk-imx8mp.mcore_booted; scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${distro_bootpart}...; for prefix in ${boot_prefixes}; do run scan_dev_for_extlinux; run scan_dev_for_scripts; done;run scan_dev_for_efi; scan_dev_for_boot_part=part list ${devtype} ${devnum} -bootable devplist; env exists devplist || setenv devplist 1; for distro_bootpart in ${devplist}; do if fstype ${devtype} ${devnum}:${distro_bootpart scan_dev_for_efi=setenv efi_fdtfile ${fdtfile}; for prefix in ${efi_dtb_prefixes}; do if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${efi_fdtfile}; then run load_efi_dtb; fi;done;run boot_e scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${boot_syslinux_conf}; then echo Found ${prefix}${boot_syslinux_conf}; run boot_extlinux; echo EXTLINUX FAILED: continuii scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${script}; then echo Found U-Boot script ${prefix}${script}; run boot_a_script; echo SCe scriptaddr=0x43500000 sd_dev=1 serial#=0b0998003e85c138 soc=imx8m soc_type=imx8mp splashimage=0x50000000 sr_ir_v2_cmd=cp.b ${fdtcontroladdr} ${fdt_addr_r} 0x10000;fdt addr ${fdt_addr_r};fdt set /soc@0/usb@32f10100/usb@38100000 compatible snps,dwc3;fdt set /soc@0/usb@32f10108/usb@38200000 compatible snps,dw ubifs_boot=if ubi part ${bootubipart} ${bootubioff} && ubifsmount ubi0:${bootubivol}; then devtype=ubi; devnum=ubi0; bootfstype=ubifs; distro_bootpart=${bootubivol}; run scan_dev_for_boot; ubifsumount; i usb_boot=usb start; if usb dev ${devnum}; then devtype=usb; run scan_dev_for_boot_part; fi vendor=freescale Environment size: 6568/16380 bytes u-boot-ecoface=> u-boot-ecoface=> ping 192.168.1.105 ethernet@30bf0000 Waiting for PHY auto negotiation to complete......................................... TIMEOUT ! phy_startup() failed: -110FAILED: -110ping failed; host 192.168.1.105 is not alive u-boot-ecoface=> CTRL-A Z for help

Re: imx8mp eqos ethernet up/down issue

vprajapati — Tue, 28 Jan 2025 08:30:55 GMT

Further debugging

u-boot-ecoface=> mii device MII devices: 'ethernet@30bf0000' Current device: 'ethernet@30bf0000' u-boot-ecoface=> mii device ethernet@30bf0000 u-boot-ecoface=> mii dump 1 0. (ffff) -- PHY control register -- (8000:8000) 0.15 = 1 reset (4000:4000) 0.14 = 1 loopback (2040:2040) 0. 6,13 = b11 speed selection = 10 Mbps (1000:1000) 0.12 = 1 A/N enable (0800:0800) 0.11 = 1 power-down (0400:0400) 0.10 = 1 isolate (0200:0200) 0. 9 = 1 restart A/N (0100:0100) 0. 8 = 1 duplex = full (0080:0080) 0. 7 = 1 collision test enable (003f:003f) 0. 5- 0 = 63 (reserved)

Re: imx8mp eqos ethernet up/down issue

JosephAtNXP — Wed, 29 Jan 2025 20:39:11 GMT

Hi @vprajapati,

1. I would confirm the PHY address in your design for reading.

2. After you find the correct address for PHY, if A/N is still disable, check the strapping pins for your design and try to enable it via MDIO write.

3. Is ping now working?

Regards,

Re: imx8mp eqos ethernet up/down issue

vprajapati — Thu, 30 Jan 2025 05:15:25 GMT

Hi @JosephAtNXP

The phy address is correct. It is 0x03.

The Auto negotiation is already enabled no need to set it.

On dhcp, it conitnuesly trying to get ip address but it is not getting.
I set the static ip and still ping is still not working. It is giveing ARP Requst timeout.

u-boot-ecoface=> ping 192.168.1.105 No linkFAILED: -11ping failed; host 192.168.1.105 is not alive u-boot-ecoface=> ping 192.168.1.105 Using ethernet@30bf0000 device ARP Retry count exceeded; starting again ping failed; host 192.168.1.105 is not alive u-boot-ecoface=>