imx-drm does not report correct info in fbset

imx-drm does not report correct info in fbset

[Fabio Estevam]

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

Re: imx-drm does not report correct info in fbset

[Fabio Estevam]

On Fri, Jun 28, 2013 at 2:28 PM, Fabio Estevam <festevam@gmail.com> 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

Re: imx-drm does not report correct info in fbset

[Russell King - ARM Linux]

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.

Re: imx-drm does not report correct info in fbset

[Fabio Estevam]

On Fri, Jun 28, 2013 at 2:49 PM, Russell King - ARM Linux
<linux@arm.linux.org.uk> 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