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-rw-r--r--Documentation/devicetree/bindings/spi/spi_pl022.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt
index 2692a5726c3f..7638b4968ddb 100644
--- a/Documentation/devicetree/bindings/spi/spi_pl022.txt
+++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt
@@ -30,7 +30,10 @@ contain the following properties.
0: SPI
1: Texas Instruments Synchronous Serial Frame Format
2: Microwire (Half Duplex)
-- pl022,com-mode : polling, interrupt or dma
+- pl022,com-mode : specifies the transfer mode:
+ 0: interrupt mode
+ 1: polling mode (default mode if property not present)
+ 2: DMA mode
- pl022,rx-level-trig : Rx FIFO watermark level
- pl022,tx-level-trig : Tx FIFO watermark level
- pl022,ctrl-len : Microwire interface: Control length