[PATCH v4 4/5] Documentation: devicetree: sja1000: add reg-io-width binding

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From: Florian Vaussard <florian.vaussard@xxxxxxx>

Add the reg-io-width property to describe the width of the memory
accesses.

Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Florian Vaussard <florian.vaussard@xxxxxxx>
Tested-by: Andreas Larsson <andreas@xxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/net/can/sja1000.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/sja1000.txt b/Documentation/devicetree/bindings/net/can/sja1000.txt
index f2105a4..b4a6d53 100644
--- a/Documentation/devicetree/bindings/net/can/sja1000.txt
+++ b/Documentation/devicetree/bindings/net/can/sja1000.txt
@@ -12,6 +12,10 @@ Required properties:
 
 Optional properties:
 
+- reg-io-width : Specify the size (in bytes) of the IO accesses that
+	should be performed on the device.  Valid value is 1, 2 or 4.
+	Default to 1 (8 bits).
+
 - nxp,external-clock-frequency : Frequency of the external oscillator
 	clock in Hz. Note that the internal clock frequency used by the
 	SJA1000 is half of that value. If not specified, a default value
-- 
1.8.5.3

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