On Mon, 2014-10-06 at 02:38PM +0200, Michal Simek wrote:
> The driver provide memory allocator which can
> be used by others drivers to allocate memory inside OCM.
> All location for 64kB blocks are supported
> and driver is trying to allocate the largest continuous
> block of memory.
>
> Checking mpcore addressing filterring is not done here
> but could be added in future.
>
> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
> ---
[...]
> diff --git a/Documentation/devicetree/bindings/arm/zynq/xlnx,zynq-ocmc.txt b/Documentation/devicetree/bindings/arm/zynq/xlnx,zynq-ocmc.txt
> new file mode 100644
> index 000000000000..8ddbd1e5ffc1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/zynq/xlnx,zynq-ocmc.txt
> @@ -0,0 +1,17 @@
> +Device tree bindings for Zynq's OCM controller
> +
> +The OCM is divided to 4 64kB segments which can be separately configured
> +to low or high location. Location is controlled via SLCR.
> +
> +Required properties:
> + compatible: Compatibility string. Must be "xlnx,zynq-ocmc-1.0".
> + reg: Specify the base and size of the OCMC registers in the memory map.
> + E.g.: reg = <0xf800c000 0x1000>;
> +
> +Example:
> +ocmc: ocmc@f800c000 {
memory-controller@...
> + compatible = "xlnx,zynq-ocmc-1.0";
> + interrupt-parent = <&intc>;
> + interrupts = <0 3 4>;
> + reg = <0xf800c000 0x1000>;
> +} ;
Sören
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