linux-kernel - Re: [PATCH v19 03/12] add bindings document for altera freeze bridge

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Date:   Sat, 8 Oct 2016 15:49:46 -0500
From:   Rob Herring <robh@...nel.org>
To:     Alan Tull <atull@...nsource.altera.com>
Cc:     Frank Rowand <frowand.list@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Moritz Fischer <moritz.fischer@...us.com>,
        Ian Campbell <ijc+devicetree@...lion.org.uk>,
        Jon Masters <jcm@...hat.com>,
        Walter Goossens <waltergoossens@...e.nl>,
        Michal Simek <michal.simek@...inx.com>,
        Cyril Chemparathy <cyril.chemparathy@...inx.com>,
        Josh Cartwright <joshc@...com>,
        Matthew Gerlach <mgerlach@...nsource.altera.com>,
        Dinh Nguyen <dinguyen@...nsource.altera.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, delicious.quinoa@...il.com
Subject: Re: [PATCH v19 03/12] add bindings document for altera freeze bridge

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@...nsource.altera.com>
> Signed-off-by: Matthew Gerlach <mgerlach@...nsource.altera.com>
> ---
> 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@...000450 {

Underscore...

> +		compatible = "altr,freeze-bridge-controller";
> +		regs = <0x1000 0x10>;
> +		bridge-enable = <0>;
> +	};
> -- 
> 2.9.3
> 
> --
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