I2c Recovery Example application not available for STM32

[ShubhadaHarkut-eaton]

I2c Recovery functions to prevent lockup is not used in any sample or driver code for stm32 controllers (stm32h743zi , stm32u575zi )

[ttmut]

I do not think that this should be considered a bug. Still, you could use I2C shell to test the recovery function.

[jhedberg]

@erwango any thoughts?

[ShubhadaHarkut-eaton]

Observations on I2C recovery api
when using the recovery api from application n code it return the error stating the "SCL GPIO device not ready" . Tried creating a forceful lockup situation and called the recovery api after timeout faced the same results .

Target used stm32u575zi_q
zephyr version : 3.6.0
os : windows

[erwango]

If not functional please raise an issue and provide a way to reproduce.

[ttmut]

According to the driver binding you need to define scl-gpios and sda-gpios if you want to use bus recovery.

https://github.com/zephyrproject-rtos/zephyr/blob/main/dts/bindings/i2c/st%2Cstm32-i2c-v2.yaml

 scl-gpios:
    type: phandle-array
    description: |
      GPIO to which the I2C SCL signal is routed. This is only needed for
      I2C bus recovery support.

 sda-gpios:
    type: phandle-array
    description: |
      GPIO to which the I2C SDA signal is routed. This is only needed for
      I2C bus recovery support.