Hello, I used two SC16IS762 chips on the customized board.sc16is762 chip is used on two SPI buses respectively,I configured a single SC16IS762 chip in the device tree, which can be used, but there is only one device node in the /dev directory when two SC16IS762 chips are configured at the same time. One of the chips has no driver loaded,What is the reason?
The following is the information I provided,thank you.
tegra194-p3668-all-p3509-0000.dts (2.0 KB)

  1. Check the status for SPI relative in the /proc/device-tree/
  2. Check the kernel message if any message about driver probe.

Thank you. We found the cause. It’s because the interrupt pin is broken。

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