AM3517 HDMI

keciy said:

I want to use HDMI video port to display the video signal in the computer monitor On AM3517 experimenter kit.However,I don't know if I need to set the board start envirenment ,and how can I achieve it. Which samples can check the display effect?

There are not specific examples for display over the HDMI/DVI interface, however you can enable it using boot arguments or by running a few commands, switching to the HDMI/DVI output is discussed in the wiki article at http://processors.wiki.ti.com/index.php/GSG:_AM35x_EVM_Additional_Procedures#Changing_the_Output_Display_to_DVI.

keciy said:

Additional,I want to know the  function of DVSDK.

DVSDK stands for Digital Video Software Development Kit, in the case of the AM3517 there is no 'DVSDK' but rather just a 'SDK' as the device is not targeted specifically at digital video applications like some other TI parts such as the Davinci line (i.e. DM6446, DM6467, DM365, etc.). The SDK contains many of the same basic components which apply to ARM only devices like the AM3517, without the higher level digital video framework software included in a DVSDK.

Hi,

I have do the command as follows:

 target $ echo 0 > /sys/devices/platform/omapdss/display0/enabled
target $ echo "" > /sys/devices/platform/omapdss/manager0/display
/* Set the Frame buffer parameters like xres, xres_virtual, y_res,
yres_virtualagain before running below command. For example for 720P as
 DVI resolution setxres=1280 yres=720 xres_virtual=1280
yres_virtual=1440.*/
target $ fbset -fb /dev/fb0 -xres $w -yres $h -vxres $w -vyres $h
target $ echo "dvi" > /sys/devices/platform/omapdss/manager0/display
target $ echo 1 > /sys/devices/platform/omapdss/display2/enabled

but when I crosscompile the examples : saMmapLoopback.c  and saMmapDisplay.c  which included in the PSP-SDK demos ,there is still no recation in the computer monitor,I don't know the reason is the board's configuration or the prblem of the examples .Now  I want anyone who can tell me a example which can display video or pictures in the monitor correctly . And if I need to modify the bootargs more.

PS:To display the video signal in the computer monitor I use a conversion line which convert HDMI to VGA.

Thanks.