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spi/rockchip: Mark DMA as optional

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The Rockchip SPI controller works fine without DMA (aside from a few
warnings).  The DMA property even implies this, saying:

  DMA request names should include "tx" and "rx" if present.

Officially mark the properties as optional.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Doug Anderson 2014-09-03 13:44:27 -07:00 committed by Mark Brown
parent 62946172c8
commit 6e3be9bbea
1 changed files with 6 additions and 2 deletions
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Documentation/devicetree/bindings/spi/spi-rockchip.txt
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@ -16,11 +16,15 @@ Required Properties:
- clocks: Must contain an entry for each entry in clock-names.
- clock-names: Shall be "spiclk" for the transfer-clock, and "apb_pclk" for
the peripheral clock.
- #address-cells: should be 1.
- #size-cells: should be 0.
Optional Properties:
- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
Documentation/devicetree/bindings/dma/dma.txt
- dma-names: DMA request names should include "tx" and "rx" if present.
- #address-cells: should be 1.
- #size-cells: should be 0.
Example: