ATmega48PA: can not run PWM on OC0A and OC2A pins
Bad news for me:

'You will not get a useful PWM on the OCnA pin on an AVR8 if you select a mode that has OCRnA as TOP.  As you have found, you can use OCR0A as TOP and OCR0B for the duty and output on OC0B.  Or use a mode with a fixed TOP, and then you can get PWM on both OC pins.'

This I received on AVRFreaks forum from a member.

So it looks like I will not be able to configure the PWM to work on OCxA pins with OCxA registers as a TOP value. :(((