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From: Javier Martinez Canillas <javier@osg.samsung.com>
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Date: Wed, 5 Aug 2015 08:25:20 +0200
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Cc: Yocto Project <yocto@yoctoproject.org>,
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	Derek Foreman <derekf@osg.samsung.com>
Subject: Re: [meta-raspberrypi][PATCH 5/5] rpi-default-providers: Switch providers according to used gfx stack
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Hello Andreas,

On 08/04/2015 06:55 PM, Andreas Müller wrote:

[snip]

> Another thing: With witch version of RasPi did you test. With V2 I get
>

I also tested on a RPI2 model B.

> [    1.342175] [drm:vc4_hdmi_bind] *ERROR* Failed to get ddc i2c adapter by node
> [    1.349359] vc4-drm soc:vc4@0x7e4c0000: failed to bind
> 3f902000.brcm,vc4-hdmi (ops vc4_hdmi_ops): -517
>

Yes, the problem is that you are missing mask_gpu_interrupt0=0x400 in your
/boot/config.txt as explained in [0]. That's why patch 2/5 added a config
option for this. Add the following to your conf/local.conf and should work:

MASK_GPU_INTERRUPT = "0x400"

I also needed to add DISABLE_OVERSCAN = "1"
 
> Andreas
> 

[0]: http://dri.freedesktop.org/wiki/VC4/

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America