NXP RT1XXX platforms fail spi loopback concurrent thread access test cases with DMA based LPSPI driver

[decsny]

Describe the bug

On RT1XXX platforms, the spi loopback test reports the concurrent thread access test cases fail using the DMA version of the driver (CONFIG_SPI_MCUX_LPSPI_DMA=y), which is the default one used for the test for this board.

Regression

• This is a regression.

Steps to reproduce

west build -p always -b mimxrt1050_evk tests/drivers/spi/spi_loopback
west flash

Relevant log output

- FAIL - [spi_loopback.test_spi_concurrent_transfer_different_spec] duration = 0.032 seconds
 - FAIL - [spi_loopback.test_spi_concurrent_transfer_same_spec] duration = 0.032 seconds

Impact

Functional Limitation – Some features not working as expected, but system usable.

Environment

Zephyr SDK

Additional Context

These concurrent thread test cases are new.

[decsny]

also apparently fails on MCX