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| author | Roland Stigge <stigge@antcom.de> | 2012-08-22 15:49:18 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-08-22 20:00:51 +0100 |
| commit | 6d3952a7dfa80919842bbe01ac7f693d40a1eb84 (patch) | |
| tree | c765e9c452f9fe92ab99bdfffc4bb27505a5bce6 /Documentation | |
| parent | f6f46de1063c8829713cd9d5b960dd8cb66cde8b (diff) | |
| download | linux-stable-6d3952a7dfa80919842bbe01ac7f693d40a1eb84.tar.gz linux-stable-6d3952a7dfa80919842bbe01ac7f693d40a1eb84.tar.bz2 linux-stable-6d3952a7dfa80919842bbe01ac7f693d40a1eb84.zip | |
spi/pl022: Add devicetree support
This patch adds device tree support to the spi-pl022 driver.
Based on the initial patch by Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi_pl022.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt index 306ec3ff3c0e..877f832c30ae 100644 --- a/Documentation/devicetree/bindings/spi/spi_pl022.txt +++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt @@ -6,7 +6,22 @@ Required properties: - interrupts : Should contain SPI controller interrupt Optional properties: +- num-cs : total number of chipselects - cs-gpios : should specify GPIOs used for chipselects. The gpios will be referred to as reg = <index> in the SPI child nodes. If unspecified, a single SPI device without a chip select can be used. +SPI slave nodes must be children of the SPI master node and can +contain the following properties. + +- pl022,interface : interface type: + 0: SPI + 1: Texas Instruments Synchronous Serial Frame Format + 2: Microwire (Half Duplex) +- pl022,com-mode : polling, interrupt or dma +- pl022,rx-level-trig : Rx FIFO watermark level +- pl022,tx-level-trig : Tx FIFO watermark level +- pl022,ctrl-len : Microwire interface: Control length +- pl022,wait-state : Microwire interface: Wait state +- pl022,duplex : Microwire interface: Full/Half duplex + |