linux-kernel - Re: [PATCH v2] drm/bridge: Fix assignment of the of

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Message-ID: <ZySkDgijDebz+6BA@linaro.org>
Date: Fri, 1 Nov 2024 11:49:02 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Johan Hovold <johan@...nel.org>
Cc: Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH v2] drm/bridge: Fix assignment of the of_node of the
 parent to aux bridge

On 24-10-31 17:33:35, Johan Hovold wrote:
> On Thu, Oct 31, 2024 at 06:13:45PM +0200, Abel Vesa wrote:
> > On 24-10-31 15:05:52, Johan Hovold wrote:
> > > On Mon, Oct 21, 2024 at 09:23:24AM +0200, Johan Hovold wrote:
> > > > On Fri, Oct 18, 2024 at 03:49:34PM +0300, Abel Vesa wrote:
> 
> > > > > Cc: stable@...r.kernel.org      # 6.8
> > 
> > > > I assume there are no existing devicetrees that need this since then we
> > > > would have heard about it sooner. Do we still need to backport it?
> > 
> > None of the DTs I managed to scan seem to have this problem.
> > 
> > Maybe backporting it is not worth it then.
> 
> Thanks for confirming. Which (new) driver and DT are you seeing this
> with?

The Parade PS8830 retimer and its DT node. The v3 of that patchset
will not trigger it unless the pinctrl properties are being added to the
retimer node.

> 
> > > > When exactly are you hitting this?
> > 
> > Here is one of the examples.
> > 
> > [    5.768283] x1e80100-tlmm f100000.pinctrl: error -EINVAL: pin-185 (aux_bridge.aux_bridge.3)
> > [    5.768289] x1e80100-tlmm f100000.pinctrl: error -EINVAL: could not request pin 185 (GPIO_185) from group gpio185 on device f100000.pinctrl
> > [    5.768293] aux_bridge.aux_bridge aux_bridge.aux_bridge.3: Error applying setting, reverse things back
> 
> I meant with which driver and DT you hit this with.
> 
> > > Abel, even if Neil decided to give me the finger here, please answer the
> > > above so that it's recorded in the archives at least.
> 
> > Sorry for not replying in time before the patch was merge.
> 
> That's not your fault.
> 
> Johan
>