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-rw-r--r--Documentation/devicetree/bindings/spi/efm32-spi.txt8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/spi/efm32-spi.txt b/Documentation/devicetree/bindings/spi/efm32-spi.txt
index 8f081c96a4fa..130cd17e3680 100644
--- a/Documentation/devicetree/bindings/spi/efm32-spi.txt
+++ b/Documentation/devicetree/bindings/spi/efm32-spi.txt
@@ -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: