[PATCH v2 4/8] drm/i2c: tda998x: prepare for video input configuration

[Jean-Francois Moine]

On Wed, 21 Aug 2013 23:36:05 +0100
Russell King - ARM Linux <linux at 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).

-- 
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