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-rw-r--r--Documentation/devicetree/bindings/spi/fsl-spi.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/fsl-spi.txt b/Documentation/devicetree/bindings/spi/fsl-spi.txt
index b032dd76e9d2..a2331372068c 100644
--- a/Documentation/devicetree/bindings/spi/fsl-spi.txt
+++ b/Documentation/devicetree/bindings/spi/fsl-spi.txt
@@ -42,6 +42,10 @@ Required properties:
- interrupts : should contain eSPI interrupt, the device has one interrupt.
- fsl,espi-num-chipselects : the number of the chipselect signals.
+Optional properties:
+- fsl,csbef: chip select assertion time in bits before frame starts
+- fsl,csaft: chip select negation time in bits after frame ends
+
Example:
spi@110000 {
#address-cells = <1>;
@@ -51,4 +55,6 @@ Example:
interrupts = <53 0x2>;
interrupt-parent = <&mpic>;
fsl,espi-num-chipselects = <4>;
+ fsl,csbef = <1>;
+ fsl,csaft = <1>;
};