2017-02-21 15:57 GMT+01:00 Rob Herring [off-list ref]:

On Thu, Feb 16, 2017 at 12:03 PM, Bartosz Golaszewski
[off-list ref] wrote:

quoted

This makes the example more or less correspond with the da850-evm
hardware setup.

Signed-off-by: Bartosz Golaszewski <redacted>
---
 .../devicetree/bindings/media/ti,da850-vpif.txt    | 36 +++++++++++++++++-----
 1 file changed, 29 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/ti,da850-vpif.txt b/Documentation/devicetree/bindings/media/ti,da850-vpif.txt
index 9c7510b..d6f93a1 100644
--- a/Documentation/devicetree/bindings/media/ti,da850-vpif.txt
+++ b/Documentation/devicetree/bindings/media/ti,da850-vpif.txt

@@ -16,7 +16,7 @@ Required properties:
 Video Capture:

 VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a
-single 16-bit channel.  It should contain at least one port child node
+single 16-bit channel. It should contain one or two port child nodes

When do you not have an output? Seems kind of useless. I'm guessing
this is an oversight in the binding and there should always be port 1
and a connector node, so document it that way.

Sometimes the output pins are not hooked up to anything - for example
on the da850-lcdk board we only use input for camera capture, while on
da850-evm we have both composite and s-video outputs and inputs. I
think it makes sens to leave out the output port if we don't use it.

This also needs to state what port 0 and port 1 are (i.e. input or
output and type of data).

I'll fix that.

quoted

 with child 'endpoint' node. Please refer to the bindings defined in
 Documentation/devicetree/bindings/media/video-interfaces.txt.

@@ -28,19 +28,26 @@ I2C-connected TVP5147 decoder:
                reg = <0x217000 0x1000>;
                interrupts = <92>;

-               port {
-                       vpif_ch0: endpoint at 0 {
+               port at 0 {
+                       vpif_input_ch0: endpoint at 0 {
                                reg = <0>;
                                bus-width = <8>;
-                               remote-endpoint = <&composite>;
+                               remote-endpoint = <&composite_in>;
                        };

-                       vpif_ch1: endpoint at 1 {
+                       vpif_input_ch1: endpoint at 1 {
                                reg = <1>;
                                bus-width = <8>;
                                data-shift = <8>;
                        };
                };
+
+               port at 1 {
+                       vpif_output_ch0: endpoint {
+                               bus-width = <8>;

Isn't this an analog input? bus-width doesn't make sense for that.

Not yet - the signals first go to a video DAC (adv7343 in the example).

Thanks,
Bartosz