linux-kernel - Re: [drm:simple_bridge_attach [simple_bridge]] *ERROR* Fix bridge driver to make connector optional!

Open Source and information security mailing list archives

Message-ID: <20200421121857.GV3456981@phenom.ffwll.local>
Date:   Tue, 21 Apr 2020 14:18:57 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     "H. Nikolaus Schaller" <hns@...delico.com>
Cc:     Maxime Ripard <maxime@...no.tech>,
        linux-omap <linux-omap@...r.kernel.org>,
        Discussions about the Letux Kernel 
        <letux-kernel@...nphoenux.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>
Subject: Re: [drm:simple_bridge_attach [simple_bridge]] *ERROR* Fix bridge
 driver to make connector optional!

On Fri, Apr 17, 2020 at 02:18:11PM +0200, H. Nikolaus Schaller wrote:
> Hi Maxime,
> I have started to test v5.7-rc1 and can't fully boot the GTA04
> device any more.
> 
> What I see in the log is:
> 
> [   28.567840] [drm:simple_bridge_attach [simple_bridge]] *ERROR* Fix bridge driver to make connector optional!

General PSA (and for Laurent et al, i.e. entire team of people working on all
the varios bridge conversions):

Please don't make something an error before all in-tree users are
converted. Even an informational warning is often too much, even only very
few drivers are left using an old pattern.
-Daniel

> [   28.567871] omapdrm omapdrm.0: unable to attach bridge /ocp@...00000/dss@...50000/encoder@...50c00
> [   28.786529] omapdrm omapdrm.0: omap_modeset_init failed: ret=-22
> [   28.841552] omapdrm: probe of omapdrm.0 failed with error -22
> 
> This device uses the ti,opa362 chip which did have a dedicated
> omapdss driver before (which is removed now) and which seems to
> be supported by the simple_bridge now.
> 
> The opa362 is sitting in the video out path from
> 
> 	omapdrm -> venc -> opa362 -> video-out-connector.
> 
> What does this error mean? How can it be fixed?
> 
> BR and thanks,
> Nikolaus
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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