From: Boris BREZILLON <boris.brezillon@free-electrons.com>
To: Ludovic Desroches <ludovic.desroches@atmel.com>,
Thierry Reding <thierry.reding@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
linux-pwm@vger.kernel.org, Samuel Ortiz <sameo@linux.intel.com>,
Pawel Moll <pawel.moll@arm.com>,
devicetree@vger.kernel.org, Lee Jones <lee.jones@linaro.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Rob Herring <robh+dt@kernel.org>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Bo Shen <voice.shen@atmel.com>, Kumar Gala <galak@codeaurora.org>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Andrew Victor <linux@maxim.org.za>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 00/11] drm: add support for Atmel HLCDC Display Controller
Date: Thu, 21 Aug 2014 10:37:06 +0200 [thread overview]
Message-ID: <20140821103706.2349915d@bbrezillon> (raw)
In-Reply-To: <20140821081619.GZ2452@ldesroches-Latitude-E6320>
Hi Ludovic,
On Thu, 21 Aug 2014 10:16:19 +0200
Ludovic Desroches <ludovic.desroches@atmel.com> wrote:
> Hi Boris,
>
> You can add
>
> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Thanks for testing this driver.
>
> Only one issue but not related to your patches, you can't display
> quickly the bootup logo since the panel detection takes too much
> time.
Yes, actually this is related to the device probe order: the
hlcdc-display-controller device is probed before the simple-panel, thus
nothing is detected on the RGB connector (I use of_drm_find_panel to
check for panel availability) when the display controller is
instantiated. I rely on the default polling infrastructure provided by
the DRM/KMS framework which polls for a new connector every 10s, and
this is far more than you kernel boot time.
Do anyone see a solution to reduce this delay (without changing the
polling interval). I thought we could add a notifier infrastructure to
the DRM panel framework, but I'm not sure this is how you want things
done...
Best Regards,
Boris
--
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
next prev parent reply other threads:[~2014-08-21 8:37 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-22 13:11 [PATCH v4 00/11] drm: add support for Atmel HLCDC Display Controller Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 01/11] mfd: add atmel-hlcdc driver Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 02/11] mfd: add documentation for atmel-hlcdc DT bindings Boris BREZILLON
2014-07-22 14:32 ` Varka Bhadram
2014-07-22 13:11 ` [PATCH v4 03/11] pwm: add support for atmel-hlcdc-pwm device Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 04/11] pwm: add DT bindings documentation for atmel-hlcdc-pwm driver Boris BREZILLON
2014-07-22 14:36 ` Varka Bhadram
2014-07-22 13:11 ` [PATCH v4 05/11] drm: add Atmel HLCDC Display Controller support Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 06/11] drm: add DT bindings documentation for atmel-hlcdc-dc driver Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 07/11] ARM: AT91/dt: split sama5d3 lcd pin definitions to match RGB mode configs Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 08/11] ARM: AT91/dt: add alternative pin muxing for sama5d3 lcd pins Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 09/11] ARM: at91/dt: define the HLCDC node available on sama5d3 SoCs Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 10/11] ARM: at91/dt: add LCD panel description to sama5d3xdm.dtsi Boris BREZILLON
2014-07-22 13:11 ` [PATCH v4 11/11] ARM: at91/dt: enable the LCD panel on sama5d3xek boards Boris BREZILLON
2014-08-21 8:16 ` [PATCH v4 00/11] drm: add support for Atmel HLCDC Display Controller Ludovic Desroches
2014-08-21 8:37 ` Boris BREZILLON [this message]
2014-08-21 9:04 ` Thierry Reding
2014-08-21 9:41 ` Boris BREZILLON
2014-08-21 9:49 ` Boris BREZILLON
2014-08-21 9:52 ` Thierry Reding
2014-08-21 10:32 ` Andrzej Hajda
2014-08-21 13:21 ` Thierry Reding
2014-08-21 15:04 ` Andrzej Hajda
2014-08-21 15:30 ` Boris BREZILLON
2014-08-21 16:10 ` Andrzej Hajda
2014-08-21 13:06 ` Boris BREZILLON
2014-08-21 13:16 ` Thierry Reding
2014-08-21 13:30 ` Boris BREZILLON
2014-08-21 14:32 ` Boris BREZILLON
2014-08-25 12:45 ` Daniel Vetter
2014-08-21 17:08 ` Laurent Pinchart
2014-08-21 17:26 ` Boris BREZILLON
2014-08-25 23:39 ` Laurent Pinchart
2014-08-27 7:52 ` Boris BREZILLON
2014-08-28 12:19 ` Laurent Pinchart
2014-08-28 14:21 ` Boris BREZILLON
2014-08-28 22:52 ` Laurent Pinchart
2014-08-21 10:16 ` Andrzej Hajda
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