Why prompt external memory controller error, may be caused by what?(jetpack 4.2.3)

[0000.126] [TegraBoot] (version 00.00.2018.01-l4t-33e7fa82)
[0000.131] Processing in cold boot mode Bootloader 2
[0000.136] A02 Bootrom Patch rev = 1023
[0000.139] Power-up reason: pmc por
[0000.142] No Battery Present
[0000.145] pmic max77620 reset reason
[0000.148] pmic max77620 NVERC : 0x80
[0000.152] RamCode = 2
[0000.154] Platform has DDR4 type RAM
[0000.157] max77620 disabling SD1 Remote Sense
[0000.161] Setting DDR voltage to 1125mv
[0000.165] Serial Number of Pmic Max77663: 0xc00a9
[0000.173] Entering ramdump check
[0000.176] Get RamDumpCarveOut = 0x0
[0000.179] RamDumpCarveOut=0x0, RamDumperFlag=0xe59ff3f8
[0000.184] Last reboot was clean, booting normally!
[0000.189] Sdram initialization is successful
[0000.193] SecureOs Carveout Base=0x00000000ff800000 Size=0x00800000
[0000.199] Lp0 Carveout Base=0x00000000ff780000 Size=0x00001000
[0000.205] BpmpFw Carveout Base=0x00000000ff700000 Size=0x00080000
[0000.211] GSC1 Carveout Base=0x00000000ff600000 Size=0x00100000
[0000.217] GSC2 Carveout Base=0x00000000ff500000 Size=0x00100000
[0000.223] GSC4 Carveout Base=0x00000000ff400000 Size=0x00100000
[0000.228] GSC5 Carveout Base=0x00000000ff300000 Size=0x00100000
[0000.234] GSC3 Carveout Base=0x000000017f300000 Size=0x00d00000
[0000.2
50] RamDump C
arveout Base=0x00000000ff280000 Size=0x00080000
[0000.256] Platform-DebugCarveout: 0
[0000.260] Nck Carveout Base=0x00000000ff080000 Size=0x00200000
[0000.265] Non secure mode, and RB not enabled.
[0000.272] Invalid GPT Partition
[0000.287] Using BFS PT to query partitions
[0000.291] failed to load NvTbootTbootCpu from (2:0)
[0000.296] re-load NvTbootTbootCpu from (4:0)
[0000.372] Csd NumOfBlocks=61157376
[0000.430] Using GPT Primary to query partitions
[0000.438] Loading Tboot-CPU binary
[0000.816] Verifying TBC in OdmNonSecureSBK mode
[0000.826] Bootloader load address is 0xa0000000, entry address is 0xa0000258
[0000.833] Bootloader downloaded successfully.
[0000.837] Downloaded Tboot-CPU binary to 0xa0000258
[0000.842] MAX77620_GPIO5 configured
[0000.845] CPU power rail is up
[0000.848] CPU clock enabled
[0000.852] Performing RAM repair
[0000.855] Updating A64 Warmreset Address to 0xa00002e9
[0000.860] Loading NvTbootBootloaderDTB
[0002.172] Verifying NvTbootBootloaderDTB in OdmNonSecureSBK mode
[0002.237] Bootloader DTB Load Address: 0x83000000
[0002.242] Loading NvTbootKernelDTB
[0003.553] Verifying NvTbootKernelDTB in OdmNonSecureSBK mode
[0003.618] Kernel DTB Load Address: 0x83100000
[0003.626] Loading cboot binary
[0005.310] Verifying EBT in OdmNonSecureSBK mode
[0005.352] Bootloader load address is 0x92c00000, entry address is 0x92c00258
[0005.359] Bootloader downloaded successfully.
[0005.551] Using BFS PT to query partitions
[0005.555] Next binary entry address: 0x92c00258
[0005.560] BoardId: 3448
[0005.564] Overriding pmu board id with proc board id
[0005.569] Display board id is not available
[0007.068] Verifying SC7EntryFw in OdmNonSecureSBK mode
[0007.120] /bpmp deleted
[0007.122] SC7EntryFw header found loaded at 0xff700000
[0007.311] OVR2 PMIC
[0007.313] Bpmp FW successfully loaded
[0007.329] WB0 init successfully at 0xff780000
[0007.334] Set NvDecSticky Bits
[0007.337] GSC2 address ff53fffc value c0edbbcc
[0007.343] GSC MC Settings done
[0007.349] TOS Image length 53680
[0007.352] Monitor size 53680
[0007.355] OS size 0
[0007.516] Secure Os AES-CMAC Verification Success!
[0007.520] TOS image cipher info: plaintext
[0007.524] Loading and Validation of Secure OS Successful
[0007.540] S
C7 Entry Firmware - 0xff700000, 0x4000
[0007.545] NvTbootPackSdramParams: start.
[0007.550] NvTbootPackSdramParams: done.
[0007.554] Tegraboot started after 53294 us
[0007.558] Basic modules init took 5654342 us
[0007.562] NvTbootQspiFlashIoctl: Opcode = 1 not supported
[0007.567] Sec Bootdevice Read Time = 12 ms, Read Size = 65 KB
[0007.573] Sec Bootdevice Write Time = 0 ms, Write Size = 0 KB
[0007.578] Storage Device Read Time = 6742 ms, Read Size = 2306 KB
[0007.584] Storage Device Write Time = 0 ms, Write Size = 0 KB
[0007.589] Next stage binary read took 1530682 us
[0007.594] Carveout took -1542360 us
[0007.597] CPU initialization took 2039550 us
[0007.601] Total time taken by TegraBoot 7682214 us

[0007.606] Starting CPU & Halting co-p
rocessor

64NOTICE: BL31: v1.3(release):23b153a63
NOTICE: BL31: Built : 22:39:57, Dec 9 2019
ERROR: Error initializing runtime service trusty_fast
[0007.728] RamCode = 2
[0007.730] get_emc_table_offset: Can’t find emc-table node
[0007.735] LPDDR4 Training: Can’t find emc-table node
[0007.930]
[0007.931] Debug Init done
[0007.934] Marked DTB cacheable
[0007.937] Bootloader DTB loaded at 0x83000000
[0007.941] Marked DTB cacheable
[0007.9
44] Kernel DTB loaded at 0x83100000
[0007.948] DeviceTree Init done
[0007.964] Pinmux ap
plied successfully
[0007.968] gicd_base: 0x50041000
[0007.972] gicc_base: 0x50042000
[0007.975] Interrupts Init done
[0007.979] Using base:0x60005090 & irq:208 for tick-timer
[0007.984] Using base:0x60005098 for delay-timer
[0007.988] platform_init_timer: DONE
[0007.992] Timer(tick) Init done
[0007.996] osc freq = 38400 khz
[0008.000]
[0008.001] Welcome to L4T Cboot
[0008.004]
[0008.005] Cboot Version: 00.00.2018.01-t210-40c3ff9c
[0008.010] calling constructors
[0008.013] initializing heap
[0008.016] initializing threads
[0008.018] initializing timers
[0008.021] creating bootstrap completion thread
[0008.026] top of bootstrap2()
[0008.029] CPU: ARM Cortex A57
[0008.031] CPU: MIDR: 0x411FD071, MPIDR: 0x80000000
[0008.036] initializing platform
[0008.044] Manufacturer: MF = 0xc2, ID MSB = 0x25
[0008.048] ID LSB = 0x36, ID-CFI len = 194 bytes
[0008.053] Macronix QSPI chip present
[0008.056] SPI device register
[0008.059] init boot device
[0008.062] allocating memory for boot device(SPI)
[0008.066] registering boot device
[0008.076] sdmmc node status = okay
[0008.079] sdcard instance = 0
[0008.082] sdcard gpio handle 0x56
[0008.085] sdcard gpio pin 0xc9
[0008.088] sdcard gpio flags 0x0
[0008.091] vmmc-supply 0x99
[0008.094] Ins
tance: 0
[0008.096] Allocating memory for context
[0008.100] enabling clock
[0008.102] sd card init
[0008.104] Check card present and stable
[0008.108] Send command 0
[0008.125] Send command 3
[0008.129] Set RCA for the card
[0008.132] Query card specific data by command 9
[0008.138] Parse CSD data
[0008.141] Send command 7
[0008.151] Calling sd device register
[0008.154] Init sdcard
[0008.157] Allocating memory
for boot device
[0008.161] Registering user device
[0008.174] Enable APE clock
[0008.176] Un-powergate APE partition
[0008.180] of_register: registering tegra_udc to of_hal
[0008.185] of_register: registering inv20628-driver to of_hal
[0008.191] of_register: registering ads1015-driver to of_hal
[0008.196] of_register: registering lp8557-bl-driver to of_hal
[0008.202] of_register: registering bq2419x_charger to of_hal
[0008.208] of_register: registering bq27441_fuel_gauge to of_hal
[0008.219] gpio framework initialized
[0008.223] of_register: registering tca9539_gpio to of_hal
[0008.228] of_register: registering tca9539_gpio to of_hal
[0008.233] of_register: registering i2c_bus_driver to of_hal
[0008.239] of_register: registering i2c_bus_driver to of_hal
[0008.244] of_register: registering i2c_bus_driver to of_hal
[0008.250] pmic framework initialized
[0008.253] of_register: registering max77620_pmic to of_hal
[0008.259] regulator framework initialized
[0008.263] of_register: registering tps65132_bl_driver to of_hal
[0008.269] initializing target
[0008.275] gpio_driver_register: register ‘tegra_gpio_driver’ driver
[0008.283] board ID = D78, board SKU = 0
[0008.286] Skipping Z3!
[0008.291] fixed regulator driver initialized
[0008.309] initializing OF layer
[0008.312] NCK carveout not present
[0008.315] Skipping dts_overrides
[0008.319] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.336] I2C Bus Init done
[0008.338] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.349] I2C Bus Init done
[0008.351] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.362] I2C Bus Init done
[0008.364] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.375] I2C Bus Init done
[0008.377] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.388] I2C Bus Init done
[0008.390] of_children_init: Ops found for compatible string maxim,max77620
[0008.401] max77620_init using irq 118
[0008.406] register ‘maxim,max77620’ pmic
[0008.410] gpio_driver_register: register ‘max77620-gpio’ driver
[0008.416] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0008.427] I2C Bus Init done
[0008.430] NCK carveout not present
[0008.440] Find /i2c@7000c000’s alias i2c0
[0008.444] get eeprom at 1-a0, size 256, type 0
[0008.453] Find /i2c@7000c500’s alias i2c2
[0008.457] get eeprom at 3-a0, size 256, type 0
[0008.461] get eeprom at 3-ae, size 256, type 0
[0008.465] pm_ids_update: Updating 1,a0, size 256, type 0
[0008.471] I2C slave not started
[0008.474] I2C write failed
[0008.476] Writing offset failed
[0008.479] eeprom_init: EEPROM read failed
[0008.483] pm_ids_update: eeprom init failed
[0008.487] pm_ids_update: Updating 3,a0, size 256, type 0
[0008.518] pm_ids_update: The pm board id is 3448-0000-200
[0008.524] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0008.532] pm_ids_update: pm id update successful
[0008.537] pm_ids_update: Updating 3,ae, size 256, type 0
[0008.542] I2C slave not started
[0008.545] I2C wri
te failed
[0008.548] Writing offset failed
[0008.551] eeprom_init: EEPROM read failed
[0008.555] pm_ids_update: eeprom init failed
[0008.585] eeprom_get_mac: EEPROM inval
id MAC address (all 0xff)
[0008.591] shim_eeprom_update_mac:267: Failed to update 0 MAC address in DTB
[0008.599] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0008.605] shim_eeprom_update_mac:267: Failed to update 1 MAC address in DTB
[0008.613] updating /chosen/nvidia,ethernet-mac node 00:04:4b:e6:db:2b
[0008.620] Plugin Manager: Parse ODM data 0x00084000
[0008.630] shim_cmdline_install: /chosen/bootargs: root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
[0008.652] Find /i2c@7000c000’s alias i2c0
[0008.656] get eeprom at 1-a0, size 256, type 0
[0008.664] Find /i2c@7000c500’s alias i2c2
[0008.668] get eeprom at 3-a0, size 256, type 0
[0008.673] get eeprom at 3-ae, size 256, type 0
[0008.677] pm_ids_update: Updating 1,a0, size 256, type 0
[0008.682] I2C slave not started
[0008.685] I2C write failed
[0008.688] Writing offset failed
[0008.691] eeprom_init: EEPROM read failed
[0008.695] pm_ids_update: eeprom init failed
[00
08.699] pm_ids_update: Updating 3,a0, size 256, type 0
[0008.729] pm_ids_update: The pm board id is 3448-0000-200
[0008.736] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0008.743] pm_ids_update: pm id update successful
[0008.747] pm_ids_update: Updating 3,ae, size 256, type 0
[0008.753] I2C slave not started
[0008.756] I2C write failed
[0008.758] Writing offset failed
[0008.761] eeprom_init: EEPROM read failed
[0008.765] pm_ids_update: eeprom init failed
[0008.795] Add serial number:1422619039916 as
DT property
[0008.803] Applying platform configs
[0008.810] platform-init is not present. Skipping
[0008.814] calling apps_init()
[0008.840] Found 14 GPT partitions in “sd0”
[0008.843] Proceeding to Cold Boot
[0008.847] starting app android_boot_app
[0008.850] Device state: unlocked
[0008.854] display console init
[0008.862] could not find regulator
[0008.865] hdmi cable connec
ted
[0008.881] edid read suc
cess
[0008.895] DT entry for leds-pwm not found
[0008.900] edid read success
[0008.903] width = 640, height = 480, frequency = 25174825
[0008.908] width = 640, height = 480, frequency = 25174825
[0008.913] width = 1280, height = 1024, frequency = 108000000
[0008.919] width = 1920, height = 1080, frequency = 148500000
[0008.925] width = 1920, height = 1080, frequency = 148351648
[0008.930] width = 1280, height = 720, frequency = 74175824
[0008.936] width = 720, height = 480, frequency = 26973026
[0008.941] Best mode Width = 1920, Height = 1080, freq = 148351648
[0008.949] tmds-config node not found
[0008.953] pmc_set_io_pad_voltage: Error -2 retrieving platform-io-pad-voltagepropsetting ‘avdd-io-hdmi-dp’ regulator to 1050000 micro volts
[0008.968] setting ‘vdd-1v8’ regulator to 1800000 micro vol
ts
[0008.975] could not find regulator
[0008.979] could not find regulator
[0008.982] could not find regulator
[0009.010] using default cmu settings
[0009.014] dc_hdmi_enable, starting HDMI initialisation
[0009.020] dc_hdmi_enable, HDMI initialisation complete
[0009.025] list and configure display window
[0009.034] display console init completed
[0009.045] subnode volume_up is not found !
[0009.049] subnode back is not found !
[0009.052] subnode volume_down is not found !
[0009.057] subnode menu is not found !
[0009.060] Gpio keyboard init success
[0009.104] found decompressor handler: lz4-legacy
[0009.118] decompressing blob (type 1)…
[0009.154] load_bmp_blob: panelresolution=1080 type=3
[0009.204] decompressor handler not found
[0009.208] load_firmware_blob: Firmware blob loaded, entries=2
[0009.214] -------> se_aes_verify_sbk_clear: 747
[0009.218] se_aes_verify_sbk_clear: Error
[0009.222] bl_battery_charging: connected to external power su
pply
[0009.230] xusb is supported
[0009.236] error while finding nvidia,portmap
[0009.740] xusb blob version 0 size 124416
[0009.744] firmware size 124416
[0009.749] Firmware timestamp: 0x5da88fc3, Version: 50.25 release
[0009.761] xhci0: 64 bytes context size, 32-bit DMA
[0009.801] usbus0: 5.0Gbps Super Speed USB v3.0
[0009.821] uhub0: <Nvidia XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
[0010.471] uhub0: 9 ports with 9 removable, self powered
[0011.471] failed to get HID devices
[0011.475] failed to init xhci or no usb device attached
[0011.485] device_query_partition_size: failed to open partition sd0:MSC !
[0011.492] MSC Partition not found
[0011.498] device_query_partition_size: failed to open partition sd0:USP !
[0011.505] USP partition read failed!
[0011.508] blob_init: blob-partition USP header read failed
[0011.514] android_boot Unable to update recovery partition
[0011.519] kfs_getpartname: name = LNX
[0011.523] Loading kernel f
rom LNX
[0011.621] load kernel from storage
[0011.633] decompressor handler not found
[0011.690] Successfully loaded kernel and ramdisk images
[0011.697] load_bmp_blob: panelresolution=1080 type=3
[0012.193] display bmp image done
[0012.196] NCK carveout not present
[0012.199] Skipping dts_overrides
[0012.202] NCK carveout not present
[0012.213] Find /i2c@7000c000’s alias i2c0
[0012.216] get eeprom at 1-a0, size 256, type 0
[0012.225] Find /i2c@7000c500’s alias i2c2
[0012.229] get eeprom at 3-a0, size 256, type 0
[0012.234] get eeprom at 3-ae, size 256, type 0
[0012.238] pm_ids_update: Updating 1,a0, size 256, type 0
[0012.243] I2C slave not started
[0012.246] I2C write failed
[0012.249] Writing offset failed
[0012.252] eeprom_init: EEPROM read failed
[0012.256] pm_ids_update: eeprom init failed
[0012.260] pm_ids_update: Updating 3,a0, size 256, type 0
[0012.290] pm_ids_update: The pm board id is 3448-0000-200
[0012.297] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0012.305] pm_ids_update: pm id update successful
[0012.309] pm_ids_update: Updating 3,ae, size 256, type 0
[0012.315] I2C slave not started
[0012.318] I2C write failed
[0012.320] Writing offset failed
[0012.323] eeprom_init: EEPROM read failed
[0012.327] pm_ids_update: eeprom init failed
[0012.357] eeprom_get_mac: EEPROM invalid MAC addres
s (all 0xff)
[0012.363] shim_eeprom_update_mac:267: Failed to update 0 MAC address in DTB
[0012.371] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0012.377] shim_eeprom_update_mac:267: Failed to update 1 MAC address in DTB
[0012.386] updating /chosen/nvidia,ethernet-mac node 00:04:4b:e6:db:2b
[0012.392] Plugin Manager: Parse ODM data 0x00084000
[0012.403] shim_cmdline_install: /chosen/bootargs: root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
[0012.418] Add serial number:1422619039916 as DT property
[0012.427] “bpmp” doesn’t exist, creating
[0012.432] Updated bpmp info to DTB
[0012.437] Updated initrd info to DTB
[0012.441] “proc-board” doesn’t exist, creating
[0012.446] Updated board info to DTB
[0012.449] “pmu-board” doesn’t exist, creating
[0012.455] Updated board info to DTB
[0012.458] “display-board” doesn’t exist, creating
[0012.464] Updated board info to DTB
[0012.467] “reset” doesn’t exist, creating
[0012.472] Updated reset info to DTB
[0012.475] Cmdline: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 console=ttyS0,115200n8 debug_uartport=lsport,0 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=0x1000@0xff780000 core_edp_mv=1075 core_edp_ma=4000 tegra_fbmem=0x800000@0x92cb4000 is_hdmi_initialised=1
[0012.514] DTB cmdline: root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
[0012.527] boot image cmdline: root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
[0012.540] Updated bootarg info to DTB
[0012.543] Adding uuid 00000001644476460800000003050380 to DT
[0012.549] Adding eks info 0 to DT
[0012.555] WARNING: Failed to pass NS DRAM ranges to TOS, err: -7
[0012.561] Updated memory info to DTB
[0012.569] set vdd_core voltage
to 1075 mv
[0012.573] setting ‘vdd-core’ regulator to 1075000 micro volts
[0012.591] Found secure-pmc; disable BPMP

U-Boot 2016.07-g0536cf2a27 (Dec 09 2019 - 22:40:32 -0800)

TEGRA210
Model: NVIDIA P3450-Porg
Board: NVIDIA P3450-PORG
DRAM:
4 GiB
MMC: Tegra SD/MMC: 0, Tegra SD/MMC: 1
SF: Detected MX25U3235F with page size 256 Bytes, erase size 4 KiB, total 4 MiB
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
Net: No ethernet found.
Hit any key to stop autoboot: 1
0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1…
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
733 bytes read in 106 ms (5.9 KiB/s)
1: primary kernel
Retrieving file: /boot/initrd
5562303 bytes read in 316 ms (16.8 MiB/s)
Retrieving file: /boot/Image
34179080 bytes read in 1613 ms (20.2 MiB/s)
append: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 console=ttyS0,115200n8 debug_uartport=lsport,0 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=0x1000@0xff780000 core_edp_mv=1075 core_edp_ma=4000 tegra_fbmem=0x800000@0x92cb4000 is_hdmi_initialised=1 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 quiet

Flattened Device Tree blob at 83100000

Booting using the fdt blob at 0x83100000
reserving fdt memory region: addr=80000000 size=20000
Using Device Tree in place at 0000000083100000, end 00000000831776f0

Starting kernel …

[ 0.616863] tegra210-emc 7001b000.external-memory-controller: Invalid table size 0 [ 1.107731] tegradc tegradc.1: dpd enable lookup fail:-19 [ 1.301155] imx219 6-0010: imx219_board_setup: error during i2c read probe (-121) [ 1.301194] imx219 6-0010: board setup failed [ 2.720179] cgroup: cgroup2: unknown option "nsdelegate" [ 4.928670] random: crng init done [ 4.932285] random: 7 urandom warning(s) missed due to ratelimiting [ 5.399107] using random self ethernet address [ 5.407247] using random host ethernet address [ 5.503886] using random self ethernet address [ 5.510993] using random host ethernet address

Ubuntu 18.04.3 LTS nvidia-desktop ttyS0

nvidia-desktop login:
» nvidia
« ��W���
» nvidia
« �ii�H
» ls
« ��

Hi zf1116,

Please be more specific what you have done with your device, is it your custom carrier board? HW info? JetPack version? ,etc.

We made a new PCB baseboard and found EMC errors, but the power supply hardware has been tested and all the design voltages are correct (JETPACK USES version 4.2.3). When I plugged the core version of the nano system into the new baseboard for electricity, I found EMC errors with messages such as LOG information. Our baseboard interface has 5 ports SWITCH (4 POE), 2 channels 232,4 channels relay, 1 HDMI, 1 USB HOST, and 1mini usbm.m2 PCIE.

Hi,

Not very sure what is the error. The log you pasted above does not have anything wrong…

[ 7.675362] random: 7 urandom warning(s) missed due to ratelimiting
[ 14.706409] tegra-i2c 7000c700.i2c: pio timed out addr: 0x50 tlen:28 rlen:128
[ 14.713652] tegra-i2c 7000c700.i2c: — register dump for debugging ----
[ 14.720460] tegra-i2c 7000c700.i2c: I2C_CNFG - 0x22c00
[ 14.725672] tegra-i2c 7000c700.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[ 14.732436] tegra-i2c 7000c700.i2c: I2C_FIFO_CONTROL - 0xe0
[ 14.738094] tegra-i2c 7000c700.i2c: I2C_FIFO_STATUS - 0x800040
[ 14.743969] tegra-i2c 7000c700.i2c: I2C_INT_MASK - 0x7d
[ 14.749289] tegra-i2c 7000c700.i2c: I2C_INT_STATUS - 0x0
[ 14.754660] tegra-i2c 7000c700.i2c: i2c transfer timed out addr: 0x50

A hardware comparison shows that the core mod_sleep signal is not up, and the kernel stops printing to this place.

could you tell me why I2c stop here? What role does eeprom play here and why does this happen?

Hi,

7000c700 is i2c4. If you are not using this interface on your board, please just disable it in devicetree.
BTW, in your first comment, there is no hang and no such error.

What role does eeprom play here and why does this happen?

It seems your board is able to read the eeprom value from module. There are lots of info stored inside module eeprom. Generally, I don’t suggest you to modify it directly.

My core board has some problem, I change another one, it’s ok.