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From: Fabio Estevam <festevam@gmail.com>
To: Robert Foss <robert.foss@collabora.com>,
	 Gary Bisson <gary.bisson@boundarydevices.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	NXP Linux Team <linux-imx@nxp.com>,
	Sascha Hauer <kernel@pengutronix.de>,
	Fabio Estevam <fabio.estevam@nxp.com>,
	Shawn Guo <shawnguo@kernel.org>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] ARM: dts: imx6qdl-nitrogen6_max: Disable LVDS channels
Date: Mon, 8 Apr 2019 17:37:47 -0300	[thread overview]
Message-ID: <CAOMZO5DAvaibi5r9CXzk8qbE7XHiHJHHvi9rcq_BJdx7aRVgoQ@mail.gmail.com> (raw)
In-Reply-To: <20190408175319.9106-1-robert.foss@collabora.com>

Hi Robert,

[Adding Gary]

On Mon, Apr 8, 2019 at 2:54 PM Robert Foss <robert.foss@collabora.com> wrote:
>
> If a LVDS device is not connected, having the LVDS channels
> enabled will prevent imx-ldb from probing correctly even
> if other CRTCs are connected.
>
> Signed-off-by: Robert Foss <robert.foss@collabora.com>
> ---
>  arch/arm/boot/dts/imx6qdl-nitrogen6_max.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/imx6qdl-nitrogen6_max.dtsi b/arch/arm/boot/dts/imx6qdl-nitrogen6_max.dtsi
> index 39200e5dc896..5b413cf4c250 100644
> --- a/arch/arm/boot/dts/imx6qdl-nitrogen6_max.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-nitrogen6_max.dtsi
> @@ -703,7 +703,7 @@
>         status = "okay";
>
>         lvds-channel@0 {
> -               status = "okay";
> +               status = "disabled";
>
>                 port@4 {
>                         reg = <4>;
> @@ -715,7 +715,7 @@
>         };
>
>         lvds-channel@1 {
> -               status = "okay";
> +               status = "disabled";

I am not sure I understood what you are trying to fix.

Could you please share some logs when imx-ldb fails to probe correctly?

Is this a regression?

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  reply	other threads:[~2019-04-08 20:38 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-08 17:53 [PATCH] ARM: dts: imx6qdl-nitrogen6_max: Disable LVDS channels Robert Foss
2019-04-08 20:37 ` Fabio Estevam [this message]
2019-04-09  0:07   ` Robert Foss
2019-04-10  7:35     ` Gary Bisson
2019-04-10 10:57       ` Robert Foss
2019-04-10 11:55         ` Fabio Estevam
2019-04-10 12:00           ` Fabio Estevam
2019-04-10 18:58             ` Robert Foss
2019-04-10 19:14               ` Fabio Estevam
2019-04-10 20:25                 ` Robert Foss
2019-04-10 20:36                   ` Fabio Estevam
2019-04-10 21:37                     ` Robert Foss
2019-04-12 12:31                     ` Fabio Estevam

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