关于IMX6ULL 不接PMIC_ON_REQ的问题

[chenhuang]

IMX6ULL有一个PMIC_ON_REQ的信号输出脚，这个管脚用来使能外部DCDC芯片的，客户问道这个PMIC_ON_REQ的信号不用有没有什么影响，外部DCDC使用硬件上拉的方式上电自动使能行不行？不用这个PMIC_ON_REQ的管脚？

[chenhuang]

Okay, thank you.

[Rita_Wang]

You are welcome, wish you have a nice day

[Rita_Wang]

You can tell customer do not use like that. Ask customer to follow our reference design.

[chenhuang]

When customers upgrade from consumer MCIMX6G2DVM05AB to MCIMX6G2AVM07AB, the main frequency is less than 700Mhz; Check the RM about SPEED_GRADING. Do you need to configure this manually? If you need to configure, please help to introduce the specific process, thank you

0x440[17:16] SPEED_GRADING[1:0]