CRC peripheral node missing in STM32 SoC .dtsi files

[adelfak]

Is your feature request related to a problem? Please describe.

While attempting to use the STM32 hardware CRC peripheral in Zephyr, I found that none of the STM32-based boards (e.g., STM32G0, STM32F4, STM32L4 families) appear to include a crc node in their device tree files.

Describe the solution you'd like

I would like to prepare a sample application that demonstrates the usage of CRC with STM32 MCUs.

Describe alternatives you've considered

No response

[adelfak]

I am working on a sample application to demonstrate the usage of the CRC peripheral with STM32 MCUs in Zephyr. However, I noticed that none of the STM32 SoC .dtsi files define a crc node, even though the STM32 hardware supports CRC via a dedicated peripheral.

For example, STM32CubeIDE and HAL drivers expose CRC functionality for STM32G0, STM32F4, STM32L4, etc., but Zephyr DTS seems to lack this entirely.

[JarmouniA]

@adelfak there is no STM32 CRC Zephyr driver, that's why.

[adelfak]

are you willing to add it in the near future?
@JarmouniA

[str4t0m]

There was one effort to implement a driver for STM32 in #74977, but that was abandoned.
Since then Renesas has picked up the effort in #87557 and once that API is accepted, it wouldn't be too much effort to implement the drvier for STM32 as well.