imx-drm does not report correct info in fbset

Hi Philipp/Sascha,

When I enable the parallel display on a mx53qsb, I noticed that fbset
does not report the correct information:

mode "800x480-0"
        # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
        geometry 800 480 800 480 16
        timings 0 0 0 0 0 0 0
        accel true
        rgba 5/11,6/5,5/0,0/0
endmode

I haven't started debugging this, but just would like to check if this
is a known issue with the imx-drm driver.

Thanks,

Fabio Estevam

On Fri, Jun 28, 2013 at 2:28 PM, Fabio Estevam [off-list ref] wrote:

Hi Philipp/Sascha,

When I enable the parallel display on a mx53qsb, I noticed that fbset
does not report the correct information:

mode "800x480-0"
        # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
        geometry 800 480 800 480 16
        timings 0 0 0 0 0 0 0

Ok, just realized that my host PC reports the same in the 'timings' line.

So not an issue with the imx-drm driver then.

Regards,

Fabio Estevam

On Fri, Jun 28, 2013 at 02:28:22PM -0300, Fabio Estevam wrote:

Hi Philipp/Sascha,

When I enable the parallel display on a mx53qsb, I noticed that fbset
does not report the correct information:

mode "800x480-0"
        # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
        geometry 800 480 800 480 16
        timings 0 0 0 0 0 0 0
        accel true
        rgba 5/11,6/5,5/0,0/0
endmode

What do you think is missing?  This is what gets reported on my laptop:

mode "1280x800"
    geometry 1280 800 1280 1024 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,0/0
endmode

DRM doesn't provide full information via fbdev - its fbdev is just a
compatibility later nothing more.

On Fri, Jun 28, 2013 at 2:49 PM, Russell King - ARM Linux
[off-list ref] wrote:

What do you think is missing?  This is what gets reported on my laptop:

mode "1280x800"
    geometry 1280 800 1280 1024 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,0/0
endmode

Yes, just saw the same on my PC.

I was thinking that the 'timings' line should show the correct display timings.

So the mx53 board is behaving the same as my laptop with regards to
'fbset' output.

DRM doesn't provide full information via fbdev - its fbdev is just a
compatibility later nothing more.

Ok, understood.

Thanks,

Fabio Estevam