Incorrect communication in the SPI_NXP_LPSPI driver compared to SPI_MCUX_LPSPI.

[AnElderlyFox]

Describe the bug

When using the i.MX RT1062 with a Winbond W25N01GVZEIG NAND flash on zephyr:main, built with Zephyr SDK 0.17.4, the YAFFS2 filesystem mounts successfully with the SPI_NXP_LPSPI driver with device clock rate 10MHz, but the partition contents appear corrupted: files are shown as directories, and data is inaccessible.

Using the SPI_MCUX_LPSPI driver with device clock rate 10MHz (up to 40Mhz too), (commit 42511c8) resolves the issue, indicating that SPI_NXP_LPSPI may behave unpredictably in certain configurations. The problem likely occurs under high driver load, making it non-obvious and difficult to reproduce consistently.

Regression

• This is a regression.

Steps to reproduce

No response

Relevant log output

Impact

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

Environment

• OS (Windows)
• Zephyr SDK 0.17.4
• zephyr:main SHA 0520dfe

Additional Context

No response

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