Add binding documentation for Allwinner V3s CSI.

Signed-off-by: Yong Deng <yong.d...@magewell.com>
---
 .../devicetree/bindings/media/sun6i-csi.txt        | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt

diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt 
b/Documentation/devicetree/bindings/media/sun6i-csi.txt
new file mode 100644
index 0000000..f8d83f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
@@ -0,0 +1,49 @@
+Allwinner V3s Camera Sensor Interface
+------------------------------
+
+Required properties:
+  - compatible: value must be "allwinner,sun8i-v3s-csi"
+  - reg: base address and size of the memory-mapped region.
+  - interrupts: interrupt associated to this IP
+  - clocks: phandles to the clocks feeding the CSI
+    * ahb: the CSI interface clock
+    * mod: the CSI module clock
+    * ram: the CSI DRAM clock
+  - clock-names: the clock names mentioned above
+  - resets: phandles to the reset line driving the CSI
+
+- ports: A ports node with endpoint definitions as defined in
+  Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+
+       csi1: csi@01cb4000 {
+               compatible = "allwinner,sun8i-v3s-csi";
+               reg = <0x01cb4000 0x1000>;
+               interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
+               clocks = <&ccu CLK_BUS_CSI>,
+                        <&ccu CLK_CSI1_SCLK>,
+                        <&ccu CLK_DRAM_CSI>;
+               clock-names = "ahb", "mod", "ram";
+               resets = <&ccu RST_BUS_CSI>;
+
+               port {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       /* Parallel bus endpoint */
+                       csi1_ep: endpoint {
+                               remote-endpoint = <&adv7611_ep>;
+                               bus-width = <16>;
+                               data-shift = <0>;
+
+                               /* If hsync-active/vsync-active are missing,
+                                  embedded BT.656 sync is used */
+                               hsync-active = <0>; /* Active low */
+                               vsync-active = <0>; /* Active low */
+                               data-active = <1>;  /* Active high */
+                               pclk-sample = <1>;  /* Rising */
+                       };
+               };
+       };
+
-- 
1.8.3.1

Reply via email to