This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TDA4VM: Is it impossible to access the resources of the mcu domain in the A72 SPL?

Part Number: TDA4VM

Hi ,

We need to access the resources of the MCU domain through I2C in the spl stage of the A72.


Referring to the existing code, A72 will access the EEPROM resources of the wakeup domain through I2C0 in the SPL stage. is working fine.

However, an error will be reported when accessing MCU domain resources through the I2C1 bus, return errno -19. The device could not be found.

Mentioning that in u-boot mode, the device can be accessed through I2C1.

Is it impossible to access the resources of the mcu domain during the spl stage? Are there restrictions?