Hello Renesas,
In the datasheet of RAA278842 video processor there is no recommendation for using decoupling capacitors on powerlines. Is it really not required any decoupling capacitors on this power lines, if yes why , if required what value of decoupling capacitor to be connected ?
Putting decoupling capacitors on power line is common practices in board design, please refer to 4834.AN-RAA27884x Hardware Design Guide Rev1.4.pdf8203.RAA278840,42_R1.1_20190530.pdf p11 in attached H/W design guide and the EVB reference schematics for details.