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authorAntonio Borneo <borneo.antonio@gmail.com>2017-03-20 10:59:59 +0100
committerMark Brown <broonie@kernel.org>2017-03-20 11:24:25 +0000
commit3c85871a8a7f079cd4a24877ac9e0bcc0b1c2e4a (patch)
tree8408a91699895793ea53512261b8578a5bcf07d8 /Documentation
parente6a72e057fa3e0ad38ec59c4779647a7bd390a37 (diff)
downloadlinux-3c85871a8a7f079cd4a24877ac9e0bcc0b1c2e4a.tar.bz2
spi: pl022: Document property values
The property "pl022,com-mode" can only assume one of the values of the enum ssp_mode, defined in include/linux/amba/pl022.h List the possible numeric values and report the associated meaning. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
-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