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SubjectRe: [PATCH RFC 2/2] dt-bindings: add binding documentation for Allwinner CSI
On Tue, Jun 27, 2017 at 07:07:34PM +0800, Yong Deng wrote:
> Add binding documentation for Allwinner CSI.

For the subject:

dt-bindings: media: Add Allwinner Camera Sensor Interface (CSI)

"binding documentation" is redundant.

>
> Signed-off-by: Yong Deng <yong.deng@magewell.com>
> ---
> .../devicetree/bindings/media/sunxi-csi.txt | 51 ++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/sunxi-csi.txt
>
> diff --git a/Documentation/devicetree/bindings/media/sunxi-csi.txt b/Documentation/devicetree/bindings/media/sunxi-csi.txt
> new file mode 100644
> index 0000000..770be0e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/sunxi-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
> + * 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. The
> + first port should be the input endpoints, the second one the outputs

Is there more than one endpoint for each port? If so, need to define
that numbering too.

> +
> +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_0: endpoint@0 {
> + reg = <0>;

Don't need this and everything associated with it for a single endpoint.

> + remote = <&adv7611_1>;
> + 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
>
> --
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