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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@opensource.altera.com> Signed-off-by: Matthew Gerlach <mgerlach@opensource.altera.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
24 lines
800 B
Plaintext
24 lines
800 B
Plaintext
Altera Freeze Bridge Controller Driver
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The Altera Freeze Bridge Controller manages one or more freeze bridges.
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The controller can freeze/disable the bridges which prevents signal
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changes from passing through the bridge. The controller can also
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unfreeze/enable the bridges which allows traffic to pass through the
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bridge normally.
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Required properties:
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- compatible : Should contain "altr,freeze-bridge-controller"
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- regs : base address and size for freeze bridge module
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Optional properties:
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- bridge-enable : 0 if driver should disable bridge at startup
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1 if driver should enable bridge at startup
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Default is to leave bridge in current state.
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Example:
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freeze-controller@100000450 {
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compatible = "altr,freeze-bridge-controller";
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regs = <0x1000 0x10>;
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bridge-enable = <0>;
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};
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