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spi: efm32: Update binding document to make "efm32,location" property optional 

If "efm32,location" property is not provided, keeping what is already
configured in the hardware, so its either the reset default 0 or whatever
the bootloader did.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Axel Lin 2014-04-07 15:11:46 +08:00 committed by Mark Brown
parent 45b15d98a9
commit e2872090ca
1 changed files with 7 additions and 1 deletions
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8
Documentation/devicetree/bindings/spi/efm32-spi.txt
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@ -8,7 +8,13 @@ Required properties:
- interrupts: pair specifying rx and tx irq
- clocks: phandle to the spi clock
- cs-gpios: see spi-bus.txt
- efm32,location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
Recommended properties :
- efm32,location: Value to write to the ROUTE register's LOCATION bitfield to
configure the pinmux for the device, see datasheet for values.
If "efm32,location" property is not provided, keeping what is
already configured in the hardware, so its either the reset
default 0 or whatever the bootloader did.
Example: