I.MX6Q first strat boot fail log!

[tommyduan]

Sometimes the system doesn't work when we first turn on the electricity!The UART LOG as follows，Can you tell me why?

• It's ok to power up again after failing to start！

  LOG：
• (180815_14:09:34.776)mxc_free_frame_buf cam->frame[i].vaddress = 0x0
  (180815_14:09:34.793)mxc_free_frame_buf cam->frame[i].vaddress = 0x0
  (180815_14:09:34.908)init: Starting service 'bootanim'...
  (180815_14:09:36.983)capability: warning: `Thread-6' uses 32-bit capabilities (legacy support in use)
  (180815_14:09:39.321)zram: 429 (system_server) Attribute mem_used_total (and others) will be removed. See zram documentation.

[igorpadykov]

Hi tommy

such issue may happen due to ddr settings, so one can try

to rebuild image with new ddr calibration coefficients found from ddr test

i.MX6/7 DDR Stress Test Tool V2.90 

Other reason may be unstable clock and power subsystem (check power-up

sequence and clock stability with oscilloscope), one can follow i.MX6 System Development

User’s Guide

https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf

Best regards
igor
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