From: Jean-Francois Moine <moinejf@free.fr>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
Darren Etheridge <darren.etheridge@gmail.com>,
Rob Clark <robdclark@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 4/8] drm/i2c: tda998x: prepare for video input configuration
Date: Thu, 22 Aug 2013 08:53:13 +0200 [thread overview]
Message-ID: <20130822085313.2e8b1ae6@armhf> (raw)
In-Reply-To: <20130821223605.GA6617@n2100.arm.linux.org.uk>
On Wed, 21 Aug 2013 23:36:05 +0100
Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> > AFAIK, the TI boards have no "pin-swapped", nor has the Cubox (there is
> > no need to set the bit CFG_GRA_SWAPRB of the register LCD_SPU_DMA_CTRL0
> > of the Dove lcd for RGB or YUV formats).
> >
> > Which board needs a special VIP configuration?
>
> If you run the NXP driver, and then run this driver, things get messed
> up - which has already been covered months ago when this patch was first
> brought up.
>
> It's there to ensure that the TDA998x is correctly configured no matter
> what it's previous state is, and prevent the thing being fragile as hell.
The NXP driver will never go to the mainline, so, I don't see the
problem. If you want to use it to test some other drivers, you should
better patch it instead of adding useless code in the TDA998x driver.
> No, reset doesn't restore its settings, only a power cycle does.
Sorry, all VIP control registers may be changed at any time and the
change appears immediately (thank you for the /sys i2c_read/write).
--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
next prev parent reply other threads:[~2013-08-22 6:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-21 18:26 [PATCH v2 4/8] drm/i2c: tda998x: prepare for video input configuration Jean-Francois Moine
2013-08-21 22:36 ` Russell King - ARM Linux
2013-08-22 6:53 ` Jean-Francois Moine [this message]
2013-08-22 8:42 ` Russell King - ARM Linux
2013-08-22 11:33 ` Rob Clark
2013-08-22 11:53 ` Russell King - ARM Linux
-- strict thread matches above, loose matches on Subject: below --
2013-08-14 19:43 [PATCH v2 0/8] Several NXP TDA998x patches Sebastian Hesselbarth
2013-08-14 19:43 ` [PATCH v2 4/8] drm/i2c: tda998x: prepare for video input configuration Sebastian Hesselbarth
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