How to change SD display to 720X480?

Hi Margarita,

I have looked at that wiki and I could not find anything that would cause the OpenGL code to not work when I set the frame buffer to 720X480 for ntsc mode on display2.  When the mode is set to "ntsc" on display2 and then fbset run with 720X480, I get this for fbset:

mode "720x480-235"
# D: 54.002 MHz, H: 62.502 kHz, V: 235.411 Hz
geometry 720 480 720 480 32
timings 18518 68 12 41 5 64 5
laced true
rgba 8/16,8/8,8/0,8/24
endmode

I saw another post about the video modes are defined in this file:ti-ezsdk_dm814x-evm_5_05_02_00\board-support\linux-04.04.00.02\drivers\video\ti81xx\vpss\sysfs.h.  I looked in this file and for "ntsc" I see this:

{"ntsc", FVID2_STD_NTSC,
{FVID2_STD_NTSC, 720, 480, FVID2_SF_INTERLACED,
216000, 60, 12, 68, 64, 5, 41, 5},
TI81xx_MODE_HDMI
},

This structure timing does not match what I see when I run fbset with 720X480.  Should they match?

In the wiki link, for display2 it says that the timings cannot be set.  Is this an issue with what I see?

I've attached some output I see when I ran a script I saw from another post.  Maybe this info helps.

Thanks,

Kim

2705.SDMoreInfo.txt

Hello,

I see this structure :

static const struct dc_vencmode_info vmode_info[]

in:
/board-support/linux-2.6.37-psp04.04.00.01/drivers/video/ti81xx/vpss

sysfs.h

If you use different timing, it may not be detected by the display.

BR
Margarita

Hi Margarita,

It's interesting that in your sysfs.h, the entry for "ntsc" does not contain TI81xx_MODE_HDMI.  I checked the /board-support/linux-2.6.37-psp04.04.00.01/drivers/video/ti81xx/vpss/sysfs.h and it looks the same as the linux-04.04.00.02 version:

{"ntsc", FVID2_STD_NTSC,
{FVID2_STD_NTSC, 720, 480, FVID2_SF_INTERLACED,
216000, 60, 12, 68, 64, 5, 41, 5},
TI81xx_MODE_HDMI
},

Which version of linux are you using?  Maybe your version is more up to date?

Thanks,

Kim

Hello,

You could check this topic:

You could check this file dctrl.c in the same folder as sysfs.

BR
Margarita

Hi Margarita,

I was able to get passed the eglCreateWindowSurface funtion call by setting the fb like this:

fbset -fb /dev/fb0 -depth 32 -xres 720 -yres 480 -vxres 800 -vyres 480

Not too surprising, the output looks really messed up.  Do you know why these settings were able to work for the eglCreateWindowSurface function call?  How can I get a good image that is 720X480, do you know? I am still wondering why the fbset -fb /dev/fb0 -depth 32 -xres 720 -yres 480 -vxres 720 -vyres 480 doesn't allow me to get passed the eglCreateWindowSurface funtion call.  And why the above fb settings allow the function to not fail.

Do you know if there is source code available for eglCreatewindowSurface?

thanks,

Kim

Hello,

What is the software release that you are using here?

BR
Margarita