From: Maxime Ripard <maxime@cerno.tech>
To: Andrey Lebedev <andrey.lebedev@gmail.com>
Cc: wens@csie.org, airlied@linux.ie, daniel@ffwll.ch,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com,
Andrey Lebedev <andrey@lebedev.lt>
Subject: Re: [PATCH v2 2/2] ARM: sun7i: dts: Add LVDS panel support on A20
Date: Fri, 14 Feb 2020 08:52:18 +0100 [thread overview]
Message-ID: <20200214075218.huxdhmd4qfoakat2@gilmour.lan> (raw)
In-Reply-To: <20200213200823.GA28336@kedthinkpad>
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Hi,
On Thu, Feb 13, 2020 at 10:08:23PM +0200, Andrey Lebedev wrote:
> On Thu, Feb 13, 2020 at 10:43:04AM +0100, Maxime Ripard wrote:
> > On Thu, Feb 13, 2020 at 12:23:57AM +0200, andrey.lebedev@gmail.com wrote:
> > > From: Andrey Lebedev <andrey@lebedev.lt>
> > >
> > > Define pins for LVDS channels 0 and 1, configure reset line for tcon0 and
> > > provide sample LVDS panel, connected to tcon0.
> > >
> > > Signed-off-by: Andrey Lebedev <andrey@lebedev.lt>
> >
> > And this prefix should be ARM: dts: sun7i ;)
>
> Ah, thanks, I think I've got the pattern now!
>
> > > + /omit-if-no-ref/
> > > + lcd_lvds0_pins: lcd_lvds0_pins {
> >
> > underscores in the node names will create a dtc warning at
> > compilation, you should use lcd-lvds0-pins instead.
It's silenced by default, but you'll get them with W=1
> You're right, I wasn't following the naming convention here. dtc doesn't
> produce any warning on this though. Fixed that anyway.
>
> > This will create a spurious warning message for TCON1, since we
> > adjusted the driver to tell it supports LVDS, but there's no LVDS
> > reset line, so we need to make it finer grained.
>
> Yes, I can attribute two of the messages in my dmesg log [1] to this
> ("Missing LVDS properties" and "LVDS output disabled". "sun4i-tcon
> 1c0d000.lcd-controller" is indeed tcon1). And yes, I can see how they
> can be confusing to someone.
>
> I'd need some pointers on how to deal with that though (if we want to do
> it in this scope).
Like I was mentionning, you could introduce a new compatible for each
TCON (tcon0 and tcon1) and only set the support_lvds flag for tcon0
Maxime
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next prev parent reply other threads:[~2020-02-14 7:52 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-10 19:56 [PATCH 1/1] Support LVDS output on Allwinner A20 Andrey Lebedev
2020-02-11 7:20 ` Maxime Ripard
2020-02-11 20:48 ` Andrey Lebedev
2020-02-12 12:53 ` Maxime Ripard
2020-02-12 22:46 ` Andrey Lebedev
2020-02-13 9:24 ` Maxime Ripard
2020-02-13 18:11 ` Andrey Lebedev
2020-02-14 7:58 ` Maxime Ripard
2020-02-12 22:23 ` [PATCH v2 1/2] ARM: sun7i: " andrey.lebedev
2020-02-13 9:32 ` Maxime Ripard
2020-02-12 22:23 ` [PATCH v2 2/2] ARM: sun7i: dts: Add LVDS panel support on A20 andrey.lebedev
2020-02-13 9:43 ` Maxime Ripard
2020-02-13 20:08 ` Andrey Lebedev
2020-02-14 7:52 ` Maxime Ripard [this message]
2020-02-14 8:43 ` Andrey Lebedev
2020-02-14 8:53 ` Maxime Ripard
2020-02-14 21:32 ` Andrey Lebedev
2020-02-17 17:51 ` Maxime Ripard
2020-02-18 17:50 ` Andrey Lebedev
2020-02-19 12:06 ` Maxime Ripard
2020-02-13 20:18 ` [PATCH v3 1/3] drm/sun4i: tcon: Introduce LVDS setup routine setting Andrey Lebedev
2020-02-13 20:18 ` [PATCH v3 2/3] drm/sun4i: tcon: Support LVDS output on Allwinner A20 Andrey Lebedev
2020-02-13 20:18 ` [PATCH v3 3/3] ARM: dts: sun7i: Add LVDS panel support on A20 Andrey Lebedev
2020-02-14 8:55 ` Maxime Ripard
2020-02-19 18:08 ` PATCH v4 Andrey Lebedev
2020-02-19 18:08 ` [PATCH 1/5] drm/sun4i: tcon: Introduce LVDS setup routine setting Andrey Lebedev
2020-02-20 17:21 ` Maxime Ripard
2020-02-20 18:19 ` Andrey Lebedev
2020-02-19 18:08 ` [PATCH 2/5] drm/sun4i: tcon: Separate quirks for tcon0 and tcon1 on A20 Andrey Lebedev
2020-02-20 17:22 ` Maxime Ripard
2020-02-19 18:08 ` [PATCH 3/5] ARM: dts: sun7i: Add LVDS panel support " Andrey Lebedev
2020-02-20 17:23 ` Maxime Ripard
2020-02-19 18:08 ` [PATCH 4/5] dt-bindings: display: sun4i: New compatibles for A20 tcons Andrey Lebedev
2020-02-20 17:24 ` Maxime Ripard
2020-02-19 18:08 ` [PATCH 5/5] drm/sun4i: tcon: Support LVDS output on Allwinner A20 Andrey Lebedev
2020-02-20 17:25 ` Maxime Ripard
2020-04-01 10:59 ` Andrey Lebedev
2020-04-01 12:14 ` Maxime Ripard
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