i2c: i2c-ocores: support for 16bit and 32bit IO

[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / i2c / i2c-ocores.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
index 1c9334b..c15781f 100644 (file)
--- a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
@@ -10,6 +10,7 @@ Required properties:
 
 Optional properties:
 - reg-shift       : device register offsets are shifted by this value
+- reg-io-width    : io register width in bytes (1, 2 or 4)
 - regstep         : deprecated, use reg-shift above
 
 Example:
@@ -23,6 +24,7 @@ Example:
                clock-frequency = <20000000>;
 
                reg-shift = <0>;        /* 8 bit registers */
+               reg-io-width = <1>;     /* 8 bit read/write */
 
                dummy@60 {
                        compatible = "dummy";