Hi,
Custom Board with OMAP3503 Processor.
In the bring up level we are trying to draw few colors on the display like red,green.etc to check the RGB data lines of the DSS interface.
With this setup we not able to get the green color.We probed the all the datalines of R,G and B.
RED datalines are toggling at 1.8V as expected.But issues are with the BLUE and GREEN datalines.
Issue:
Probing the BLUE datalines we have seen the amplitude is very less(say 480mV).
For GREEN datalines also the amplitude voltage level is very less(say 250mV).
We are probing the signals at the OMAP 3503 processor side.We have tested the vdss_io voltage and it is coming as 1.8V.
We have tested the same code in OMAP35X EVM1 and it is working fine.So is there any specific power domain configuration for DSS in OMAP3503 between OMAP3530.
Are we missing any register setting configuration particularly for OMAP3503 like power domain configuration?