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| author |   Leif Middelschulte <leif.middelschulte@gmail.com> | 2017-04-23 21:19:58 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2017-04-25 16:37:53 +0100 |
| commit | f72efa7e690ab5c4068ccba31c4da032bc45c29c (patch) | |
| tree | 2ff01c9757a2151e4a5d655889053c854a818cf4 /Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt | |
| parent | Linux 4.11-rc1 (diff) | |
| download | linux-dev-f72efa7e690ab5c4068ccba31c4da032bc45c29c.tar.xz linux-dev-f72efa7e690ab5c4068ccba31c4da032bc45c29c.zip | |
spi-imx: Implements handling of the SPI_READY mode flag.
This patch implements consideration of the SPI_READY mode flag as
defined in spi.h. It extends the device tree bindings to support
the values defined by the reference manual for the DRCTL field.
Thus supporting edge-triggered and level-triggered bursts.
Signed-off-by: Leif Middelschulte <Leif.Middelschulte@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt index 8bc95e2fc47f..31b5b21598ff 100644 --- a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt @@ -23,6 +23,12 @@ See the clock consumer binding, Obsolete properties: - fsl,spi-num-chipselects : Contains the number of the chipselect +Optional properties: +- fsl,spi-rdy-drctl: Integer, representing the value of DRCTL, the register +controlling the SPI_READY handling. Note that to enable the DRCTL consideration, +the SPI_READY mode-flag needs to be set too. +Valid values are: 0 (disabled), 1 (edge-triggered burst) and 2 (level-triggered burst). + Example: ecspi@70010000 { @@ -35,4 +41,5 @@ ecspi@70010000 { <&gpio3 25 0>; /* GPIO3_25 */ dmas = <&sdma 3 7 1>, <&sdma 4 7 2>; dma-names = "rx", "tx"; + fsl,spi-rdy-drctl = <1>; }; |