On Wed, Sep 28, 2016 at 01:21:51PM -0500, Alan Tull wrote:
> Add bindings document for the Altera Freeze Bridge. A Freeze
> Bridge is used to gate traffic to/from a region of a FPGA
> such that that region can be reprogrammed. The Freeze Bridge
> exist in FPGA fabric that is not currently being reconfigured.
>
> Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Matthew Gerlach <mgerlach@xxxxxxxxxxxxxxxxxxxxx>
> ---
> v19: Added in v19 of patchset, uses fpga image info struct
> ---
> .../bindings/fpga/altera-freeze-bridge.txt | 23 ++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt
>
> diff --git a/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt
> new file mode 100644
> index 0000000..97ecc11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt
> @@ -0,0 +1,23 @@
> +Altera Freeze Bridge Controller Driver
> +
> +The Altera Freeze Bridge Controller manages one or more freeze bridges.
> +The controller can freeze/disable the bridges which prevents signal
> +changes from passing through the bridge. The controller can also
> +unfreeze/enable the bridges which allows traffic to pass through the
> +bridge normally.
> +
> +Required properties:
> +- compatible : Should contain "altr,freeze-bridge-controller"
Only one version of the h/w?
> +- regs : base address and size for freeze bridge module
> +
> +Optional properties:
> +- bridge-enable : 0 if driver should disable bridge at startup
> + 1 if driver should enable bridge at startup
> + Default is to leave bridge in current state.
> +
> +Example:
> + freeze_controller@100000450 {
Underscore...
> + compatible = "altr,freeze-bridge-controller";
> + regs = <0x1000 0x10>;
> + bridge-enable = <0>;
> + };
> --
> 2.9.3
>
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