BBB [debian] How to execute LSBInitscript AFTER loading device tree overlay?

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My program runs on BBB (debian) and depends on device tree overlay (SPI).

  1. Overlay compiled and added to /etc/default/capemgr: CAPE=BB-DSPI1.
  2. LSB-script that executes my prog added to the system with update-rc.d, Required-Start parameter is $all
  3. Running script maually after booting with start parameter works as expected.
  4. During boot-up sequence execution fails, since /sys/devices/ocp.3/481a0000.spi/spi_master/ not found.
  5. I used to have another BBB configured same way. There was no issue.

Can anyone explain how to run my prog at startup?

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user2017181 On

edit script:

# Required-Start: capemgr.sh