Hi Laurent, Am Samstag, 5. Februar 2022, 04:40:14 CET schrieb Laurent Pinchart: > Hi Alexander, > > Thank you for the patch. > > On Fri, Feb 04, 2022 at 01:15:12PM +0100, Alexander Stein wrote: > > imx7_csi_configure() allows configuring these Bayer patterns when > > starting a stream. So allow these in link_validate() as well. > > > > Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> > > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > > > --- > > I'm wondering if V4L2_PIX_FMT_SBGGR16 (and their variants) is correct in > > this function. imx7_csi_configure() does not list > > MEDIA_BUS_FMT_Sxxxx16_1X16. Also I can't find a proper a proper setting > > in CSI_CR18 of CSI Bridge in IMX8M Mini RM for RAW16. The feature list > > names a "16-bit data port for Bayer data input", but is it actually > > supported? I do not know anything about the MIPI CSI data formats though. > > Maybe someone else can clarify this. > The CSI bridge has a 16-bit input. The MIPI_DATA_FORMAT field in CR18 > maps to the CSI-2 DT value, and it's not clear if it's only used to > filter on the CSI-2 DT, or if it does more than that. If we're lucky, > it's the former and we can just use 0x2e. Well, 0x2e is not listed as a valid value for MIPI_DATA_FORMAT in both i.MX7D RM Rev1 and i.MX8M Mini RM Rev 3. So I'm not so sure about that. Maybe this holds true for other devices as well. I can not test RAW16 anyway, so I just wanted to raise a possible issue here. Regards, Alexander > > > drivers/staging/media/imx/imx7-media-csi.c | 12 ++++++++++++ > > 1 file changed, 12 insertions(+) > > > > diff --git a/drivers/staging/media/imx/imx7-media-csi.c > > b/drivers/staging/media/imx/imx7-media-csi.c index > > 158d2a736c6d..7e737221f187 100644 > > --- a/drivers/staging/media/imx/imx7-media-csi.c > > +++ b/drivers/staging/media/imx/imx7-media-csi.c > > @@ -1004,6 +1004,18 @@ static int imx7_csi_pad_link_validate(struct > > v4l2_subdev *sd,> > > case V4L2_PIX_FMT_SGBRG8: > > case V4L2_PIX_FMT_SGRBG8: > > > > case V4L2_PIX_FMT_SRGGB8: > > + case V4L2_PIX_FMT_SBGGR10: > > + case V4L2_PIX_FMT_SGBRG10: > > + case V4L2_PIX_FMT_SGRBG10: > > + case V4L2_PIX_FMT_SRGGB10: > > + case V4L2_PIX_FMT_SBGGR12: > > + case V4L2_PIX_FMT_SGBRG12: > > + case V4L2_PIX_FMT_SGRBG12: > > + case V4L2_PIX_FMT_SRGGB12: > > + case V4L2_PIX_FMT_SBGGR14: > > + case V4L2_PIX_FMT_SGBRG14: > > + case V4L2_PIX_FMT_SGRBG14: > > > > + case V4L2_PIX_FMT_SRGGB14: > > case V4L2_PIX_FMT_SBGGR16: > > case V4L2_PIX_FMT_SGBRG16: > > case V4L2_PIX_FMT_SGRBG16:
