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    Subject[RFC 10/10] sunxi-cedrus: Add device tree binding document
    Date
    Device Tree bindings for the Allwinner's video engine

    Signed-off-by: Florent Revest <florent.revest@free-electrons.com>
    ---
    .../devicetree/bindings/media/sunxi-cedrus.txt | 44 ++++++++++++++++++++++
    1 file changed, 44 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/media/sunxi-cedrus.txt

    diff --git a/Documentation/devicetree/bindings/media/sunxi-cedrus.txt b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt
    new file mode 100644
    index 0000000..26f2e09
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt
    @@ -0,0 +1,44 @@
    +Device-Tree bindings for SUNXI video engine found in sunXi SoC family
    +
    +Required properties:
    +- compatible : "allwinner,sun5i-a13-video-engine";
    +- memory-region : DMA pool for buffers allocation;
    +- clocks : list of clock specifiers, corresponding to
    + entries in clock-names property;
    +- clock-names : should contain "ahb", "mod" and "ram" entries;
    +- resets : phandle for reset;
    +- interrupts : should contain VE interrupt number;
    +- reg : should contain register base and length of VE.
    +
    +Example:
    +
    +reserved-memory {
    + #address-cells = <1>;
    + #size-cells = <1>;
    + ranges;
    +
    + ve_reserved: cma {
    + compatible = "shared-dma-pool";
    + reg = <0x43d00000 0x9000000>;
    + no-map;
    + linux,cma-default;
    + };
    +};
    +
    +video-engine {
    + compatible = "allwinner,sun5i-a13-video-engine";
    + memory-region = <&ve_reserved>;
    +
    + clocks = <&ahb_gates 32>, <&ccu CLK_VE>,
    + <&dram_gates 0>;
    + clock-names = "ahb", "mod", "ram";
    +
    + assigned-clocks = <&ccu CLK_VE>;
    + assigned-clock-rates = <320000000>;
    +
    + resets = <&ccu RST_VE>;
    +
    + interrupts = <53>;
    +
    + reg = <0x01c0e000 4096>;
    +};
    --
    2.7.4
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