Nano not boot up

Hi guys:
Nano is not boot up,which is confuing me.Could you can give some ides?Thanks!
1.micro-usb supply
2.when power on,boot err is as follows:
[0000.131] Processing in cold boot mode Bootloader 2
[0000.136] A02 Bootrom Patch rev = 1023
[0000.140] Power-up reason: pmc por
[0000.143] No Battery Present
[0000.145] pmic max77620 reset reason
[0000.149] pmic max77620 NVERC : 0x40
[0000.152] RamCode = 0
[0000.154] Platform has DDR4 type RAM
[0000.158] max77620 disabling SD1 Remote Sense
[0000.162] Setting DDR voltage to 1125mv
[0000.166] Serial Number of Pmic Max77663: 0xc30ef
[0000.173] Entering ramdump check
[0000.176] Get RamDumpCarveOut = 0x0
[0000.180] RamDumpCarveOut=0x0, RamDumperFlag=0xe59ff3f8
[0000.185] Last reboot was clean, booting normally!
[0000.189] Sdram initialization is successful
[0000.194] SecureOs Carveout Base=0x00000000ff800000 Size=0x00800000
[0000.200] 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
[0000.229] GSC5 Carveout Base=0x00000000ff300000 Size=0x00100000
[0000.235] GSC3 Carveout Base=0x000000017f300000 Size=0x00d00000
[0000.251] RamDump Carveout Base=0x00000000ff280000 Size=0x00080000
[0000.257] Platform-DebugCarveout: 0
[0000.260] Nck Carveout Base=0x00000000ff080000 Size=0x00200000
[0000.266] Non secure mode, and RB not enabled.
[0000.399] Csd NumOfBlocks=124735488
[0000.404] Set High speed to 1
[0000.408] Error mask set in wait for cmd complete with error 0x3 in HwSdmmcWaitForCommandComplete func at 278 line
[0000.418] Command complete wait failed with error 0x3 Interrupt 0x18001
[0000.424] Number of retries left 4
[0000.436] Using GPT Primary to query partitions
[0000.443] Loading Tboot-CPU binary
[0000.455] Verifying TBC in OdmNonSecureSBK mode
[0000.465] Bootloader load address is 0xa0000000, entry address is 0xa0000258
[0000.472] Bootloader downloaded successfully.
[0000.476] Downloaded Tboot-CPU binary to 0xa0000258
[0000.481] MAX77620_GPIO5 configured
[0000.485] CPU power rail is up
[0000.488] CPU clock enabled
[0000.491] Performing RAM repair
[0000.494] Updating A64 Warmreset Address to 0xa00002e9
[0000.499] Loading NvTbootBootloaderDTB
[0000.537] Verifying NvTbootBootloaderDTB in OdmNonSecureSBK mode
[0000.602] Bootloader DTB Load Address: 0x83000000
[0000.607] Loading NvTbootKernelDTB
[0000.644] Verifying NvTbootKernelDTB in OdmNonSecureSBK mode
[0000.709] Kernel DTB Load Address: 0x83100000
[0000.716] Loading cboot binary
[0000.759] Verifying EBT in OdmNonSecureSBK mode
[0000.802] Bootloader load address is 0x92c00000, entry address is 0x92c00258
[0000.809] Bootloader downloaded successfully.
[0000.813] Next binary entry address: 0x92c00258
[0000.818] BoardId: 3448
[0000.823] Overriding pmu board id with proc board id
[0000.827] Display board id is not available
[0000.870] Verifying SC7EntryFw in OdmNonSecureSBK mode
[0000.922] /bpmp deleted
[0000.924] SC7EntryFw header found loaded at 0xff700000
[0001.112] OVR2 PMIC
[0001.114] Bpmp FW successfully loaded
[0001.120] WB0 init successfully at 0xff780000
[0001.125] Set NvDecSticky Bits
[0001.128] GSC2 address ff53fffc value c0edbbcc
[0001.134] GSC MC Settings done
[0001.140] TOS Image length 53680
[0001.143] Monitor size 53680
[0001.146] OS size 0
[0001.156] Secure Os AES-CMAC Verification Success!
[0001.160] TOS image cipher info: plaintext
[0001.164] Loading and Validation of Secure OS Successful
[0001.180] SC7 Entry Firmware - 0xff700000, 0x4000
[0001.185] NvTbootPackSdramParams: start.
[0001.190] NvTbootPackSdramParams: done.
[0001.194] Tegraboot started after 53763 us
[0001.198] Basic modules init took 798315 us
[0001.202] NvTbootQspiFlashIoctl: Opcode = 1 not supported
[0001.207] Sec Bootdevice Read Time = 622327755 ms, Read Size = 622327755 KB
[0001.214] Sec Bootdevice Write Time = 0 ms, Write Size = 0 KB
[0001.219] Storage Device Read Time = 182 ms, Read Size = 2241 KB
[0001.225] Storage Device Write Time = 0 ms, Write Size = 0 KB
[0001.230] Next stage binary read took 39427 us
[0001.235] Carveout took -51092 us
[0001.238] CPU initialization took 382351 us
[0001.242] Total time taken by TegraBoot 1169001 us

[0001.247] Starting CPU & Halting co-processor

64NOTICE: BL31: v1.3(release):a28d87f09
NOTICE: BL31: Built : 21:10:01, Aug 12 2019
ERROR: Error initializing runtime service trusty_fast

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

hello tonylau2010,

may I know which JetPack release you’re working with,
did you enable SecureOS (i.e. Trusty), Nano series do not support with Trusty.