[PATCH v4 1/2] dt-bindings: media: Add Allwinner V3s Camera Sensor Interface (CSI)
From: robh@kernel.org (Rob Herring)
Date: 2017-12-26 21:55:46
Also in:
linux-devicetree, linux-media, lkml
On Fri, Dec 22, 2017 at 05:41:29PM +0800, Yong Deng wrote:
quoted hunk ↗ jump to hunk
Add binding documentation for Allwinner V3s CSI. Signed-off-by: Yong Deng <yong.deng@magewell.com> --- .../devicetree/bindings/media/sun6i-csi.txt | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txtdiff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt new file mode 100644 index 0000000..b5bfe3f --- /dev/null +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt@@ -0,0 +1,51 @@ +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 + * bus: 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. + Currently, the driver only support the parallel interface. So, a single port + node with one endpoint and parallel bus is supported.
What the driver supports is not relevant. Please document what the h/w has.
+
+Example:
+
+ csi1: csi at 1cb4000 {
+ 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 = "bus", "mod", "ram";
+ resets = <&ccu RST_BUS_CSI>;
+
+ port {+ #address-cells = <1>; + #size-cells = <0>;
These are not needed with a single endpoint.
+
+ /* 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