Add bindings for Synopsys DesignWare MIPI CSI-2 host.

Signed-off-by: Luis Oliveira <loli...@synopsys.com>
---
Changelog
v2-V3
- removed IPI settings

 .../devicetree/bindings/media/snps,dw-csi-plat.txt | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/snps,dw-csi-plat.txt

diff --git a/Documentation/devicetree/bindings/media/snps,dw-csi-plat.txt 
b/Documentation/devicetree/bindings/media/snps,dw-csi-plat.txt
new file mode 100644
index 0000000..be3da05
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/snps,dw-csi-plat.txt
@@ -0,0 +1,52 @@
+Synopsys DesignWare CSI-2 Host controller
+
+Description
+-----------
+
+This HW block is used to receive image coming from an MIPI CSI-2 compatible
+camera.
+
+Required properties:
+- compatible: shall be "snps,dw-csi-plat"
+- reg                  : physical base address and size of the device memory 
mapped
+  registers;
+- interrupts           : CSI-2 Host interrupt
+- snps,output-type     : Core output to be used (IPI-> 0 or IDI->1 or BOTH->2)
+                         These  values choose which of the Core outputs will 
be used,
+                         it can be Image Data Interface or Image Pixel 
Interface.
+- phys                 : List of one PHY specifier (as defined in
+                         
Documentation/devicetree/bindings/phy/phy-bindings.txt).
+                         This PHY is a MIPI DPHY working in RX mode.
+- resets               : Reference to a reset controller (optional)
+
+The per-board settings:
+ - port sub-node describing a single endpoint connected to the camera as
+   described in video-interfaces.txt[1].
+
+Example:
+
+       csi2_1: csi2@3000 {
+               compatible = "snps,dw-csi-plat";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = < 0x03000 0x7FF>;
+               interrupts = <2>;
+               output-type = <2>;
+               resets = <&dw_rst 1>;
+               phys = <&mipi_dphy_rx1 0>;
+               phy-names = "csi2-dphy";
+
+               /* CSI-2 per-board settings */
+               port@1 {
+                       reg = <1>;
+                       csi1_ep1: endpoint {
+                               remote-endpoint = <&camera_1>;
+                               data-lanes = <1 2>;
+                       };
+               };
+               port@2 {
+                       csi1_ep2: endpoint {
+                               remote-endpoint = <&vif1_ep>;
+                       };
+               };
+       };
--
2.7.4

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