Other Parts Discussed in Thread: CDCEL913
Hi TI,
I have a problem and try to find out the reason.
Here is HW system like below. and there are 2x HW board.
in this same system, same schematic and same HW,
in case of A board, there is no problem, it works well. but,
in case of B board, there is a problem. the problem is "not to show any screen on display panel, in initial time (after booting)".
our BSP engineer shares :
- BSP team want to use external clock in TI 941, CDCEL913.
- but, when he(BSP) uses CDCEL913, Board-A shows right image, but, Board-B doesn't show anything in panel during boot sequence.
- if Board-B uses DSI input clock as the reference clock, display works well.
- BSP told me that "PCLK_DETECT STATUS" value is different in Board A & B.
-> and so, BSP team tries to set the register "PCLK_AUTO (disable), REFCLK (DSI CLK)" in SER 941, and "RX_LOCK_MODE (RX_LOCK asserted when device is linked..)" in DES 948.
-> in this situation, it works fine.
My question is :
q1) is it possible to have different value for "PCLK_DETECT STATUS" in same HW board ?
q2) is there any point, dependency and pre-condition to use external clock (CECEL913) ?
Thanks,