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SubjectRe: [PATCH v2 05/11] dt-bindings: Document the Rockchip ISP1 bindings
On Fri, Nov 24, 2017 at 10:37:00AM +0800, Jacob Chen wrote:
> From: Jacob Chen <jacob2.chen@rock-chips.com>
>
> Add DT bindings documentation for Rockchip ISP1
>
> Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
> ---
> .../devicetree/bindings/media/rockchip-isp1.txt | 61 ++++++++++++++++++++++
> 1 file changed, 61 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/rockchip-isp1.txt
>
> diff --git a/Documentation/devicetree/bindings/media/rockchip-isp1.txt b/Documentation/devicetree/bindings/media/rockchip-isp1.txt
> new file mode 100644
> index 000000000000..5e5b72edcf81
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/rockchip-isp1.txt
> @@ -0,0 +1,61 @@
> +Rockchip SoC Image Signal Processing unit v1
> +----------------------------------------------
> +
> +Rockchip ISP1 is the Camera interface for the Rockchip series of SoCs
> +which contains image processing, scaling, and compression funcitons.
> +
> +Currently device tree nodes for the Rockchip ISP1 driver includes:

Bindings describe the h/w, not drivers.

> +MIPI D-PHY, ISP.
> +
> +Required properties:
> + - compatible: value should be one of the following
> + "rockchip,rk3288-cif-isp";
> + "rockchip,rk3399-cif-isp";
> + - reg : offset and length of the register set for the device.
> + - interrupts: should contain ISP interrupt.
> + - clocks: phandle to the required clocks.
> + - clock-names: required clock name.
> + - iommus: required a iommu node.
> +
> +The device node should contain one 'port' child node with child 'endpoint'
> +nodes, according to the bindings defined in Documentation/devicetree/bindings/
> +media/video-interfaces.txt.

You need to enumerate the endpoints (mipi and parallel), too.

> +
> +Example:
> +SoC-specific DT entry:
> + isp0: isp0@ff910000 {
> + compatible = "rockchip,rk3399-cif-isp";
> + reg = <0x0 0xff910000 0x0 0x4000>;
> + interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH 0>;
> + clocks = <&cru SCLK_ISP0>,
> + <&cru ACLK_ISP0>, <&cru ACLK_ISP0_WRAPPER>,
> + <&cru HCLK_ISP0>, <&cru HCLK_ISP0_WRAPPER>;
> + clock-names = "clk_isp",
> + "aclk_isp", "aclk_isp_wrap",
> + "hclk_isp", "hclk_isp_wrap";
> + power-domains = <&power RK3399_PD_ISP0>;
> + iommus = <&isp0_mmu>;
> + status = "disabled";
> + };
> +
> +Board-specific:

Just show the complete example. The SoC and board split is purely source
level convention.

> + isp0: isp0@ff910000 {
> + port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* mipi */
> + isp0_mipi_in: endpoint@0 {
> + reg = <0>;
> + remote-endpoint = <&dphy_rx0_out>;
> + };
> +
> + /* parallel */
> + isp0_parallel_in: endpoint@1 {
> + reg = <1>;
> + remote-endpoint = <&ov5640_out>;
> + };
> + };
> + };
> +
> +The MIPI-DPHY device binding is defined in rockchip-mipi-dphy.txt.
> --
> 2.15.0
>

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