Whats missing in my new FB DRM driver... "No connectors reported connected with modes"?

[Xinliang Liu]

On 31 December 2015 at 02:46, Carlos Palminha <CARLOS.PALMINHA at synopsys.com>
wrote:

> Hi guys,
>
> I'm writing a DRM driver for a framebuffer embedded hardware that uses an
> i2c encoder (adv7511), following the basic steps suggested by Laurent in
> "anatomy of an embedded KMS driver":
> https://www.youtube.com/watch?v=Ja8fM7rTae4
>
> After initiliazing all kms, crtc, encoder, i2c, connector functions and
> structures i'm calling drm_fbdev_cma_init to create a fbdev.
>
> When booting i'm getting an error message saying "No connectors reported
> connected with modes", but the driver init is ok and i can find the
> /dev/dri/* and /dev/fb0 devices.
>
> Any clue what i might be missing during the driver load?
>

​I think you should check on the 'get_modes'​ call back of adv7511 driver.
(Or, if possible show us the code.)

Best,
-xinliang


>
> Thanks...
>
> Regards,
> C.Palminha
>
> --- boot log snippet ---
> [drm] Initialized drm 1.1.0 20060810
> drm-arcpgu e0017000.pgu: No connectors reported connected with modes
> [drm] Cannot find any crtc or sizes - going 1024x768
> Console: switching to colour frame buffer device 128x48
> drm-arcpgu e0017000.pgu: fb0:  frame buffer device
> [drm] Initialized drm-arcpgu 1.0.0 20151127 on minor 0
> --- boot log snippet ---
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