Renesas OpenVG sample program does not come out of while loop

Problem:

Renesas provided sample program for its built-in OpenVG controller does not come out of while loop in status checking of wait_state() function, when calling OpenVG_init() function.

Solution:

Please check the following conditions:

① Framebuffer is located in Cache-inhibited memory region
② Clock supply to the OpenVG controller is enabled. (Exception also occurs, if the clock supply is not enabled) Please check the setting in Power Save Unit Registers.
③ Correct clock supply is supplied to the Graphics controller. The Clock setting in Clock Controller Unit has to be set correctly to supply 200 MHz to the Image processing unit.