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spi/xtensa-xtfpga: add DT binding documentation

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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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Max Filippov 2014-03-12 21:55:25 +04:00 • committed by Mark Brown
parent 6840cc29f2
commit 27a89b9f0d
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Documentation/devicetree/bindings/spi/spi-xtensa-xtfpga.txt Normal file
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Cadence Xtensa XTFPGA platform SPI controller.
This simple SPI master controller is built into xtfpga bitstreams and is used
to control daughterboard audio codec.
Required properties:
- compatible: should be "cdns,xtfpga-spi".
- reg: physical base address of the controller and length of memory mapped
region.