On Tue, 2017-04-04 at 15:11 -0700, Steve Longerbeam wrote: > > On 03/30/2017 10:25 AM, Philipp Zabel wrote: > > The TVP5150 DT bindings specify a single output port (port 0) that > > corresponds to the video output pad (pad 1, DEMOD_PAD_VID_OUT). > > > > Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> > > --- > > I'm trying to get this to work with a TVP5150 analog TV decoder, and the > > first problem is that this device doesn't have pad 0 as its single > > output pad. Instead, as a MEDIA_ENT_F_ATV_DECODER entity, it has for > > pads (input, video out, vbi out, audio out), and video out is pad 1, > > whereas the device tree only defines a single port (0). > > Shouldn't the DT bindings define ports for these other pads? In this case, probably yes for the input pad, certainly no for the VBI/audio pads. See the other mail. > I haven't seen this documented anywhere, but shouldn't there > be a 1:1 correspondence between DT ports and media pads? Not in general. But imagine a dual HDMI->CSI2 converter, for example. We don't support this yet, but that might reasonably be described in the device tree as a single device with two output ports. But the internal representation would be two completely separate v4l2 subdevices. regards Philipp
