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| author | Antonio Borneo <borneo.antonio@gmail.com> | 2017-03-20 05:59:59 -0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-03-20 07:24:25 -0400 |
| commit | 3c85871a8a7f079cd4a24877ac9e0bcc0b1c2e4a (patch) | |
| tree | 8408a91699895793ea53512261b8578a5bcf07d8 | |
| parent | e6a72e057fa3e0ad38ec59c4779647a7bd390a37 (diff) | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi_pl022.txt | 5 |
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. | |||
| 30 | 0: SPI | 30 | 0: SPI |
| 31 | 1: Texas Instruments Synchronous Serial Frame Format | 31 | 1: Texas Instruments Synchronous Serial Frame Format |
| 32 | 2: Microwire (Half Duplex) | 32 | 2: Microwire (Half Duplex) |
| 33 | - pl022,com-mode : polling, interrupt or dma | 33 | - pl022,com-mode : specifies the transfer mode: |
| 34 | 0: interrupt mode | ||
| 35 | 1: polling mode (default mode if property not present) | ||
| 36 | 2: DMA mode | ||
| 34 | - pl022,rx-level-trig : Rx FIFO watermark level | 37 | - pl022,rx-level-trig : Rx FIFO watermark level |
| 35 | - pl022,tx-level-trig : Tx FIFO watermark level | 38 | - pl022,tx-level-trig : Tx FIFO watermark level |
| 36 | - pl022,ctrl-len : Microwire interface: Control length | 39 | - pl022,ctrl-len : Microwire interface: Control length |