PROCESSOR-SDK-J721S2: How do I disable the Watchdog function of PMIC through i2c0 of the mcu domain?

Part Number: PROCESSOR-SDK-J721S2

Tool/software:

The PMIC of my custom board uses TPS65941, but the changed TPS65941 is reset by the watchdog function about every 13 minutes. I want to disable this watchdog function. So I found out that I can change the value of the 0x409 register of the i2c0 slave address 0x12 of the mcu domain to 0xbf. Please tell me how to use the i2c0 of the mcu domain. And if there is an example code that I can refer to, it would be helpful to me if you wrote it together.