[PATCH] media: imx: imx8mp-mipi-csi2: Remove YUV422 2X8

[Laurent Pinchart]

Hi Jacopo,

On Mon, Feb 21, 2022 at 12:29:15PM +0100, Jacopo Mondi wrote:
> On Mon, Feb 21, 2022 at 01:26:45PM +0200, Laurent Pinchart wrote:
> > On Mon, Feb 21, 2022 at 12:16:11PM +0100, Jacopo Mondi wrote:
> > > The 2X8 variants of MEDIA_BUS_FMT_YUYV8_2X8 does not apply to serial
> >
> > Maybe s/serial/CSI-2/
> >
> > > busses.
> > >
> > > Drop it and while at it beautify the formats declaration list a little
> > > by putting the opening curly brace after the comment.
> > >
> > > Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
> > > ---
> > >  drivers/staging/media/imx/imx8mq-mipi-csi2.c | 6 ++----
> > >  1 file changed, 2 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
> > > index 56ef3b3b2906..a3e33ce83c1f 100644
> > > --- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
> > > +++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
> > > @@ -200,11 +200,9 @@ static const struct csi2_pix_format imx8mq_mipi_csi_formats[] = {
> > >  	}, {
> > >  		.code = MEDIA_BUS_FMT_SRGGB14_1X14,
> > >  		.width = 14,
> > > -	}, {
> > > +	},
> > >  	/* YUV formats */
> > > -		.code = MEDIA_BUS_FMT_YUYV8_2X8,
> > > -		.width = 16,
> > > -	}, {
> > > +	{
> > >  		.code = MEDIA_BUS_FMT_YUYV8_1X16,
> >
> > While at it, should we also switch this to MEDIA_BUS_FMT_UYVY8_1X16,
> > which is the canonical format for YUV422 8-bit on CSI-2 ?
> >
> 
> Should I ?
> I forgot why UYVY is preferred over YUYV.

It's a convention, we picked UYVY for CSI-2 a long time ago. Sensor
drivers should match that convention.

> Also this will break quite some scripts for many users :)
> Should I rather add it instead ?

We can also support the non-standard YUYV order if the sensor does as
well, so I don't mind having both options here. The important part is to
have UYVY.

> No problem for me in either cases
> 
> > >  		.width = 16,
> > >  	}

-- 
Regards,

Laurent Pinchart