DRV8350: Layout of DCDC Power GND

Part Number:DRV8350

Hi,

My customer is using DRV8350.
He has some question.

Layout example and EVM layout are showed below.

DCDC's diode is near DGND in those.
DVDD is digital GND.

Q1: Is it no problem? I think this dirties DGND.
Q2: Is DGND and GND connected at internal of device?

Best regards,
Shimizu