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authorRoland Stigge <stigge@antcom.de>2012-09-18 15:53:53 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-25 13:06:16 +0200
commit39a6ac11df6579df0361922f05c43f0fac8daa37 (patch)
tree6e8838fc000f9ff56d3f09e9beeb8ea561455e16 /Documentation
parentspi/s3c64xx: Don't free controller_data on non-dt platforms (diff)
downloadlinux-39a6ac11df6579df0361922f05c43f0fac8daa37.tar.xz
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spi/pl022: Devicetree support w/o platform data
Even with devicetree support, we needed platform data to provide some data, leading to mixed device tree and platform data. This patch makes it possible to provide all that information via device tree. Now, the data must be provided via platform data _or_ device tree completely. Only in case of DMA where a callback specification is necessary (dma_filter()), platform data is the only option. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-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.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt
index 877f832c30ae..f158fd31cfda 100644
--- a/Documentation/devicetree/bindings/spi/spi_pl022.txt
+++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt
@@ -10,6 +10,13 @@ Optional properties:
- 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.
+- pl022,autosuspend-delay : delay in ms following transfer completion before
+ the runtime power management system suspends the
+ device. A setting of 0 indicates no delay and the
+ device will be suspended immediately
+- pl022,rt : indicates the controller should run the message pump with realtime
+ priority to minimise the transfer latency on the bus (boolean)
+
SPI slave nodes must be children of the SPI master node and can
contain the following properties.