• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Subscribers 99 subscribers
  • Views 464 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

input:NTSC, output:NTSC in dm816x evm + vs daughter card

kc jin
Prodigy 40 points

Dear,

I am testing the dm816x evm + vs daughter card with ti-ezsdk_dm816x-evm_5_01_01_80 package.

The output figure of HDMI of linux-based screen works well,

however I would like to change the input and output source using NTSC video signal.

Please let me know the command or script related to the video source change.

Any comment would be greatly appreciated.

Best regards,

From jin

  • 0
    TI__Mastermind 43875 points

    Jin,

    Check the VPSS user guide here...

    http://processors.wiki.ti.com/index.php/DM814X_AM387X_VPSS_Video_Driver_User_Guide

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 40 points

    Thanks Steve ~~

    The message is like this, please comment~~

    ---------------------------------------------------------------------------------------------------

    root@dm816x-evm:~#
    root@dm816x-evm:~# echo 1:sd > /sys/devices/platform/vpss/graphics2/nodes
    VPSS_DCTRL: failed to get node input status
    VPSS_GRPX : (2)- failed to enable node
    root@dm816x-evm:~# cat /sys/devices/platform/vpss/graphics2/nodes
    1:sd
    root@dm816x-evm:~# echo 1:sd > /sys/devices/platform/vpss/graphics2/nodes
    VPSS_DCTRL: failed to get node input status
    VPSS_GRPX : (2)- failed to enable node
    root@dm816x-evm:~# echo 1:dvo2 > /sys/devices/platform/vpss/graphics2/nodes
    root@dm816x-evm:~# echo 1:dvo2 > /sys/devices/platform/vpss/graphics0/nodes
    root@dm816x-evm:~# echo 1:dvo2 > /sys/devices/platform/vpss/graphics1/nodes
    root@dm816x-evm:~# echo 1:sd > /sys/devices/platform/vpss/grVPSS_DCTRL: failed to get node input status
    aphics1/nodes
    VPSS_GRPX : (1)- failed to enable node
    root@dm816x-evm:~# echo 1:sd > /sys/devices/platform/vpss/graphics0/nodes
    VPSS_DCTRL: failed to get node input status
    VPSS_GRPX : (0)- failed to enable node
    root@dm816x-evm:~# echo 1:sd > /sys/devices/platform/vpss/graphics2/nodes
    VPSS_DCTRL: failed to get node input status
    VPSS_GRPX : (2)- failed to enable node
    root@dm816x-evm:~#

  • 0 in reply to kc jin
    TI__Mastermind 20245 points

    Hi,

    Make sure that your display is disable before you try to switch fb displays. echo 0 > /sys/devices/platform/vpss/display2/enabled. After this you try switching FB. Please dont mark thread as answered unless problem gets solved else you may not get response thinking thread is closed and problem is solved.

    Regards,

    Hardik Shah

  • 0 in reply to HardikShah
    Prodigy 40 points

    Dear H. Shah,

    I tested with 'echo 0 > ....."

    root@dm816x-evm:/sys/devices/platform/vpss# echo 0 > ./display0/enabled
    root@dm816x-evm:/sys/devices/platform/vpss# echo 0 > ./display1/enabled
    root@dm816x-evm:/sys/devices/platform/vpss# echo 0 > ./display2/enabled
    root@dm816x-evm:/sys/devices/platform/vpss# echo 1 > ./display2/enabled
    root@dm816x-evm:/sys/devices/platform/vpss# echo 1 > ./graphics2/enabled
    VPSS_GRPX : please open fb2 node first.
    root@dm816x-evm:/sys/devices/platform/vpss# fbset

    mode "1920x1080-60"
        # D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz
        geometry 1920 1080 1920 3240 32
        timings 6734 148 88 36 4 44 5
        rgba 8/16,8/8,8/0,8/24
    endmode
    

    Best Regards,
    

    From Jin
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
    • 

		
	
  • 
		
    
			 


	
		
	
	









    
	
    
		
    
							
					
    
		
    
			
													0
							
			
				
									
							
						
				
			
			
			
												
						in reply to kc jin
					
									
    
	
    
	                                    
                      
    
                        
                          TI__Mastermind
                        20245 points
                      
    
                          
                   		
		
    
					
    Hi,
    

    You have to disable display only and not grpx. since /dev/fb is not open no need to disable grpx. After changing the fb mapping from one display to another, application has to take care or setting fb parameters correctly based on new display.
    

    

    Regards,
    

    Hardik Shah 
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                 	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
    •