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graphics and video - vpss driver

ranchu
Guru 20755 points

Hello,

I have dome strange issue when trying to run graphic applications.

I can only use graphics >after< starting video application but not before or after the video application stops.

I don't understand why, becuase when I compare the vpss parameters in sysfs, they are all the same !

root@dm814x:~# cat /sys/devices/platform/vpss/display0/enabled

1
root@dm814x:~# cat /sys/devices/platform/vpss/display1/enabled
1
root@dm814x:~# cat /sys/devices/platform/vpss/graphics0/enabled
1
root@dm814x:~# cat /sys/devices/platform/vpss/display0/timings
65000,1024/24/160/136,768/3/29/6,1
root@dm814x:~# cat /sys/devices/platform/vpss/display1/timings
65000,1024/24/160/136,768/3/29/6,1
root@dm814x:~# cat /sys/devices/platform/vpss/display1/source
hdmi
root@dm814x:~# cat /sys/devices/platform/vpss/display0/mode
1024x768@60
root@dm814x:~# cat /sys/devices/platform/vpss/display1/mode
1024x768@60
root@dm814x:~# cat /sys/devices/platform/vpss/display0/clksrc
dclk
root@dm814x:~# cat /sys/devices/platform/vpss/display1/clksrc
dclk
root@dm814x:~# cat /sys/devices/platform/vpss/display0/saturation
128
root@dm814x:~# cat /sys/devices/platform/vpss/display1/saturation
128
root@dm814x:~# cat /sys/devices/platform/vpss/display0/hue
31
root@dm814x:~# cat /sys/devices/platform/vpss/display1/hue
31
root@dm814x:~# cat /sys/devices/platform/vpss/display0/contrast
128
root@dm814x:~# cat /sys/devices/platform/vpss/display1/contrast
128
root@dm814x:~# cat /sys/devices/platform/vpss/display0/order
0,0
root@dm814x:~# cat /sys/devices/platform/vpss/display1/order
0,0
root@dm814x:~# cat /sys/devices/platform/vpss/system/tiedvencs
5

root@dm814x:~# cat /sys/devices/platform/vpss/graphics/nodes
1:hdmi

'
root@dm814x:~#

I also noticed that I can't set dclk into display1:

root@dm814x:~# echo 0 >/sys/devices/platform/vpss/display0/enabled 
root@dm814x:~# echo 0 >/sys/devices/platform/vpss/display1/enabled 
root@dm814x:~# echo dclk >/sys/devices/platform/vpss/display0/clksrc 
root@dm814x:~# echo dclk >/sys/devices/platform/vpss/display1/clksrc 
-sh: echo: write error: Invalid argument

Thank you,

Ran

  • 0
    TI__Guru* 80190 points

    Hello,

    Ran Shalit said:

    I have dome strange issue when trying to run graphic applications.

    I can only use graphics >after< starting video application but not before or after the video application stops.

    What is the hardware platform that you are using?

    What is the software release that you are using here?

    Which graphic application you are trying to run(some demo?)?

    Best Regards,

    Margarita

  • 0 in reply to Margarita Gashova
    Guru 20755 points

    Hi

    I am using rdk 4.1.0.2 with QT but I think there is no issue here of sdk or gui application because all I try is to work with fbdev0 after system startup.

    thanks

    Ran