Re: [PATCH v5] dt-bindings: fpga: Add bindings document for Xilinx LogiCore PR Decoupler
From: Alan Tull
Date: Thu Apr 13 2017 - 16:26:37 EST
On Thu, Apr 13, 2017 at 3:07 PM, Rob Herring <robh@xxxxxxxxxx> wrote:
> On Sun, Apr 09, 2017 at 10:10:31AM -0700, Moritz Fischer wrote:
>> This adds the binding documentation for the Xilinx LogiCORE PR
>> Decoupler soft core.
>>
>> Signed-off-by: Moritz Fischer <mdf@xxxxxxxxxx>
>> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
>> Acked-by: Alan Tull <atull@xxxxxxxxxx>
>> Cc: SÃren Brinkmann <soren.brinkmann@xxxxxxxxxx>
>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>> Cc: devicetree@xxxxxxxxxxxxxxx
>> ---
>>
>> Changes from v4:
>> - Ssubject line
>> - Replaced 'or' by 'followed by' as suggested by Rob
>>
>> Changes from v3:
>> - Addressed Michal's comments
>> - Addressed Alan's Comments
>> - Added Alan's Acked-by
>>
>> Changes from v2:
>> - Added refence to generic fpga-region bindings
>> - Fixed up reg property in example
>> - Added fallback to "xlnx,pr-decoupler" without version
>>
>> Changes from v1:
>> - Added clock names & clock to example
>> - Merged some of the description from Michal's version
>>
>> ---
>> .../bindings/fpga/xilinx-pr-decoupler.txt | 36 ++++++++++++++++++++++
>> 1 file changed, 36 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
>>
>> diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
>> new file mode 100644
>> index 0000000..b2c58fb
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
>> @@ -0,0 +1,36 @@
>> +Xilinx LogiCORE Partial Reconfig Decoupler Softcore
>> +
>> +The Xilinx LogiCORE Partial Reconfig Decoupler manages one or more
>> +decouplers / fpga bridges.
>> +The controller can decouple/disable the bridges which prevents signal
>> +changes from passing through the bridge. The controller can also
>> +couple / enable the bridges which allows traffic to pass through the
>> +bridge normally.
>> +
>> +The Driver supports only MMIO handling. A PR region can have multiple
>> +PR Decouplers which can be handled independently or chained via decouple/
>> +decouple_status signals.
>> +
>> +Required properties:
>> +- compatible : Should contain "xlnx,pr-decoupler-1.00" followed by
>> + "xlnx,pr-decoupler"
>> +- regs : base address and size for decoupler module
>> +- clocks : input clock to IP
>> +- clock-names : should contain "aclk"
>> +
>> +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.
>
> Did this get into a common location? If so, then just "see .../?.txt" is
> enough of a description.
IIRC we went with this as is, with the intent of moving it to
a common location in a separate patch. This binding shows
up in a a few bindings docs, so one patch could move it from all
of them at the same time. That hasn't happened yet.
Alan
>
> Rob
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