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-rw-r--r--Documentation/devicetree/bindings/spi/mxs-spi.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/mxs-spi.txt b/Documentation/devicetree/bindings/spi/mxs-spi.txt
index c36296f5ad28..e2e13957c2a4 100644
--- a/Documentation/devicetree/bindings/spi/mxs-spi.txt
+++ b/Documentation/devicetree/bindings/spi/mxs-spi.txt
@@ -6,6 +6,10 @@ Required properties:
- interrupts: Should contain SSP interrupts (error irq first, dma irq second)
- fsl,ssp-dma-channel: APBX DMA channel for the SSP
+Optional properties:
+- clock-frequency : Input clock frequency to the SPI block in Hz.
+ Default is 160000000 Hz.
+
Example:
ssp0: ssp@80010000 {