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From: "Fabio Estevam" <festevam@gmail.com>
Date: Tue, 17 Dec 2019 08:08:52 -0300
Message-ID: <CAOMZO5BXj++qd94hvH9CVpb992TkOfk=51ByKpm2Of1DUXHyFQ@mail.gmail.com>
Subject: Re: [meta-freescale] How to get an fb device with Sumo on i.MX6?
To: Stefan Birkholz <Birkholz@systecnet.com>
Cc: Clay Montgomery <clay@montgomery1.com>, 
	"meta-freescale@lists.yoctoproject.org" <meta-freescale@lists.yoctoproject.org>
Content-Type: text/plain; charset="UTF-8"

Hi Stefan,

On Tue, Dec 17, 2019 at 7:44 AM Stefan Birkholz <Birkholz@systecnet.com> wrote:

> [    2.847793] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [    2.854549] [drm] No driver support for vblank timestamp query.
> [    2.910683] imx-drm display-subsystem: bound imx-ipuv3-crtc.2 (ops imx_drm_exit [imxdrm])
> [    2.939490] imx-drm display-subsystem: bound imx-ipuv3-crtc.3 (ops imx_drm_exit [imxdrm])
> [    2.950857] imx-drm display-subsystem: failed to bind disp0 (ops imx_pd_ops [parallel_display]): -517
> [    2.964169] imx-drm display-subsystem: master bind failed: -517

-517 is -EPROBE_DEFER. We need to understand which resource is causing
this problem.

> In the devicetree I use "fsl,imx-display-subsystem", "fsl,imx-parallel-display" and "panel-lvds" as drivers for our display; these settings work (without problems) on 4.19 and up to 5.0.21, but starting from 5.1.0 I get the error above.

I would suggest to report such regression to the lists and folks
listed by ./scripts/get_maintainer.pl -f drivers/gpu/drm/imx/

Sharing your device tree would also help in the report.

Regards,

Fabio Estevam