[media] media: atmel-isi: add primary DT support

This patch add the DT support for Atmel ISI driver.
It use the same v4l2 DT interface that defined in video-interfaces.txt.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Cc: devicetree@vger.kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/media/atmel-isi.txt b/Documentation/devicetree/bindings/media/atmel-isi.txt
new file mode 100644
index 000000000000..17e71b7b44c6
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/atmel-isi.txt
@@ -0,0 +1,51 @@
+Atmel Image Sensor Interface (ISI) SoC Camera Subsystem
+----------------------------------------------
+
+Required properties:
+- compatible: must be "atmel,at91sam9g45-isi"
+- reg: physical base address and length of the registers set for the device;
+- interrupts: should contain IRQ line for the ISI;
+- clocks: list of clock specifiers, corresponding to entries in
+          the clock-names property;
+- clock-names: must contain "isi_clk", which is the isi peripherial clock.
+
+ISI supports a single port node with parallel bus. It should contain one
+'port' child node with child 'endpoint' node. Please refer to the bindings
+defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+        isi: isi@f0034000 {
+                compatible = "atmel,at91sam9g45-isi";
+                reg = <0xf0034000 0x4000>;
+                interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
+
+                clocks = <&isi_clk>;
+                clock-names = "isi_clk";
+
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinctrl_isi>;
+
+                port {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        isi_0: endpoint {
+                                remote-endpoint = <&ov2640_0>;
+                                bus-width = <8>;
+                        };
+                };
+        };
+
+        i2c1: i2c@f0018000 {
+                ov2640: camera@0x30 {
+                        compatible = "omnivision,ov2640";
+                        reg = <0x30>;
+
+                        port {
+                                ov2640_0: endpoint {
+                                        remote-endpoint = <&isi_0>;
+                                        bus-width = <8>;
+                                };
+                        };
+                };
+        };