Hello
The memory particles we use are DDR4.LPDDR4 used on EVK.
We encountered a problem when adjusting the driver, that is, adding an mdelay of 1s or more to any driver, the system will freeze when it starts.
The location of the jam is related to the place where the delay is added. When the delay is added to the drive that is initialized earlier, the system will basically freeze to the position of the delay. If the delay is added to the drive that is initialized later, the system will start a little bit and then freeze.
If there is no delay, the system will start normally. We replaced the modified kernel on the EVK at the same time, and there was no stuck problem.
The reason why we try this is because when we debug the camera, the IIC takes a long time to read the register and the system will freeze.