From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline
Date: Wed, 21 Jan 2015 09:56:48 +0100 [thread overview]
Message-ID: <20150121085648.GB4367@lukather> (raw)
In-Reply-To: <1421672477-12978-2-git-send-email-hdegoede@redhat.com>
On Mon, Jan 19, 2015 at 02:01:17PM +0100, Hans de Goede wrote:
> Testing has shown that on sun4i the display backend engine does not have
> deep enough fifo-s causing flickering / tearing in full-hd mode due to
> fifo underruns. This can be avoided by letting the display frontend engine
> do the dma from memory, and then letting it feed the data directly into
> the backend unmodified, as the frontend does have deep enough fifo-s.
>
> Note since u-boot-v2015.01 has been released using the de_be0-lcd0-hdmi
> pipeline on sun4i, we need to keep that one around too (unfortunately).
>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Merged, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Ian Campbell <ijc-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: Re: [PATCH] ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline
Date: Wed, 21 Jan 2015 09:56:48 +0100 [thread overview]
Message-ID: <20150121085648.GB4367@lukather> (raw)
In-Reply-To: <1421672477-12978-2-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 802 bytes --]
On Mon, Jan 19, 2015 at 02:01:17PM +0100, Hans de Goede wrote:
> Testing has shown that on sun4i the display backend engine does not have
> deep enough fifo-s causing flickering / tearing in full-hd mode due to
> fifo underruns. This can be avoided by letting the display frontend engine
> do the dma from memory, and then letting it feed the data directly into
> the backend unmodified, as the frontend does have deep enough fifo-s.
>
> Note since u-boot-v2015.01 has been released using the de_be0-lcd0-hdmi
> pipeline on sun4i, we need to keep that one around too (unfortunately).
>
> Signed-off-by: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Merged, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-01-21 8:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-19 13:01 [PATCH fix for 3.19] ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline Hans de Goede
2015-01-19 13:01 ` Hans de Goede
2015-01-19 13:01 ` [PATCH] " Hans de Goede
2015-01-19 13:01 ` Hans de Goede
2015-01-19 13:20 ` Maxime Ripard
2015-01-19 13:20 ` Maxime Ripard
2015-01-19 13:35 ` Hans de Goede
2015-01-19 13:35 ` Hans de Goede
2015-01-19 13:46 ` Hans de Goede
2015-01-19 13:46 ` Hans de Goede
2015-01-19 21:32 ` Maxime Ripard
2015-01-19 21:32 ` Maxime Ripard
2015-01-20 13:18 ` Hans de Goede
2015-01-20 13:18 ` Hans de Goede
2015-01-19 20:47 ` Maxime Ripard
2015-01-19 20:47 ` Maxime Ripard
2015-01-21 8:56 ` Maxime Ripard [this message]
2015-01-21 8:56 ` Maxime Ripard
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