I am using AM387x WEC7 BSP.
I am trying to set the VIDEO_1 clock out (DVO2) to 33.5 MHz. Following are the M, N, M2 values. I then enable HDVPSS/HDMI in the eboot.
#define VIDEO_1_N 19
#define VIDEO_1_M 335
#define VIDEO_1_M2 10
#define VIDEO_1_CLKCTRL 0x801
On SD boot with the above changes these are the observations.
1. If only MLO and EBOOT are coopied on the SD card. AT the end of EBOOT, DVO2 is 33.5 MHz on the oscilloscope.
2.MLO, EBOOT and NK bin on SD card, after the WEC7 image execution, DVO2 is not the expected value of 33.5 MHz
3. MLO, EBOOT, and NK bin on SD card, with syslink and HDMI drivers disabled(the WEC7 image throws error because of no Syslink..), DVO2 is 33.5 MHz.,
With this, am assuming that Syslink does configure the VIDEO_1 PLL, which means that the EBOOT settings are getting overwritten. Since Syslink is a black box and I don't have access to the code, I would like to know if my assumption is correct? Please can you confirm.
Regards
Pallavi