Re: [PATCH 04/22] media: Move v4l2_fwnode_parse_link from v4l2 to driver base

[Steve Longerbeam]

On 8/14/19 3:04 PM, Russell King - ARM Linux admin wrote:
> On Wed, Aug 14, 2019 at 12:04:41PM -0700, Steve Longerbeam wrote:
> > On 8/14/19 3:30 AM, Russell King - ARM Linux admin wrote:
> > > On Tue, Aug 06, 2019 at 09:53:41AM -0700, Steve Longerbeam wrote:
> > > > The full patchset doesn't seem to be up yet, but see [1] for the cover
> > > > letter.
> > > Was the entire series copied to the mailing lists, or just selected
> > > patches?  I only saw 4, 9, 11 and 13-22 via lakml.
> > The whole series was posted to the linux-media ML, see [1]. At the time,
> > none of the linux-media ML archives had the whole series.
> >
> > > In the absence of the other patches, will this solve imx-media binding
> > > the internal subdevs of sensor devices to the CSI2 interface?
> > "internal subdevs of sensor devices" ?? That doesn't make any sense.
> Sorry, but it makes complete sense when you consider that sensor
> devices may have more than one subdev, but there should be only one
> that is the "output" to whatever the camera is attached to.  The
> other subdevs are internal to the sensor.

Ah, thanks for the clarification. Yes, by "internal subdevs" I 
understand what you mean now. The adv748x and smiapp are examples.

> subdevs are not purely the remit of SoC drivers.

So there is no binding of internal subdevs to the receiver CSI-2. The 
receiver CSI-2 subdev will create media links to the subdev that has an 
externally exposed fwnode endpoint that connects with the CSI-2 sink pad.

Steve