The eMMC was changed. http://www.elinux.org/Beagleboard:BeagleBoneBlack#Board_Revisions_and_Changes
I have no explanation. Gerald On Wed, Sep 17, 2014 at 7:51 PM, <[email protected]> wrote: > I am using a custom OS and have tailored the display driver and timing > after the standard Linux distribution. I have several Rev A6 and a few REV > B boards which the display driver works just fine on several different > resolutions. I noticed when I run the exact same software (card based > image) on a rev C board my display monitor will not sync. I have verified > the no sync with two different rev C boards (CircuitCo and Element14). This > leads me to believe there is some subtle hardware difference. I verified > the pclk/hsync/vsyn/de timings are exactly the same on the scope for all > the rev A6 the B and the C boards. So I assume everything up to the > framer is exactly the same. > > All the factory Linux versions work just fine but I did notice on the > latest rev C boards with the Debian distro they are running at a much > faster pclock rate 111Mhz vs 40Mhz. > > Was the framer or some clocking changed? Any idea on what could explain > why rev A and B boards works but C’s do not even though the LCD controllers > timing are exactly the same? > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
