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spi/mcspi: allow configuration of pin directions

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Allow D0 to be an input and D1 to be an output, configurable via
platform data and a new DT property.

Based on a patch from  Matus Ujhelyi <matus.ujhelyi@streamunlimited.com>

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Daniel Mack
2012-10-07 18:19:44 +02:00
committed by Mark Brown
parent ddffeb8c4d
commit 0384e90b85
3 changed files with 25 additions and 8 deletions
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4
Documentation/devicetree/bindings/spi/omap-spi.txt
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@@ -6,7 +6,9 @@ Required properties:
- "ti,omap4-spi" for OMAP4+.
- ti,spi-num-cs : Number of chipselect supported by the instance.
- ti,hwmods: Name of the hwmod associated to the McSPI
- ti,pindir-d0-in-d1-out: Select the D0 pin as input and D1 as
output. The default is D0 as output and
D1 as input.
Example: