Describe the optional endpoint properties for endpoint nodes of the R-Car
VIN interface device tree bindings documentation.
Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
Documentation/devicetree/bindings/media/rcar_vin.txt | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/Documentation/devicetree/bindings/media/rcar_vin.txt b/Documentation/devicetree/bindings/media/rcar_vin.txt
index 39c4e6a..b410863 100644
--- a/Documentation/devicetree/bindings/media/rcar_vin.txt
+++ b/Documentation/devicetree/bindings/media/rcar_vin.txt
@@ -45,6 +45,17 @@ The per-board settings Gen2 platforms:
Only the first one will be considered as each vin interface has one
input port.
+ - Optional properties for endpoint nodes:
+ - hsync-active: see [1] for description. Default is active high.
+ - vsync-active: see [1] for description. Default is active high.
+ If both HSYNC and VSYNC polarities are not specified, embedded
+ synchronization is selected.
+ - field-active-even: see [1] for description. Default is active high.
+ - bus-width: see [1] for description. The selected bus width depends on
+ the SoC type and selected input image format.
+ Valid values are: 8, 10, 12, 16, 24 and 32.
+ - data-shift: see [1] for description. Valid values are 0 and 8.
+
The per-board settings Gen3 platforms:
Gen3 platforms can support both a single connected parallel input source
@@ -57,6 +68,10 @@ from local SoC CSI-2 receivers (port@1) depending on SoC.
from external SoC pins as described in video-interfaces.txt[1].
Describing more than one endpoint in port@0 is invalid. Only VIN
instances that are connected to external pins should have port@0.
+
+ Endpoint nodes of port@0 support the optional properties listed in
+ the Gen2 per-board settings description.
+
- port@1 - sub-nodes describing one or more endpoints connected to
the VIN from local SoC CSI-2 receivers. The endpoint numbers must
use the following schema.
@@ -66,6 +81,8 @@ from local SoC CSI-2 receivers (port@1) depending on SoC.
- endpoint@2 - sub-node describing the endpoint connected to CSI40
- endpoint@3 - sub-node describing the endpoint connected to CSI41
+ Endpoint nodes of port@1 do not support any optional endpoint property.
+
Device node example for Gen2 platforms
--------------------------------------
--
2.7.4
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