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About the clock of IPNC 8127

Genius 3400 points


Hi all,

        From the schematic of DM1827, I see that it had used two crystal oscillator, 20M and 22.579M Hz(20M connect to DEVOSC, and 22.579 connect to AUXOSC). But from the source of uboot, I only see the 20MHz setting.

       Where do it set to use to  22.579M Hz?  In our design, we did not use Audio, HDMI and HDVPSS, only use EDMA, USB, RTC eg. Did I need to add the  22.579M Hz crystal oscillatior? 

       Thanks a lot.