diff --git a/Documentation/powerpc/dts-bindings/fsl/ssi.txt b/Documentation/powerpc/dts-bindings/fsl/ssi.txt
index a2d963998a6..73133228893 100644
--- a/Documentation/powerpc/dts-bindings/fsl/ssi.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/ssi.txt
@@ -30,6 +30,8 @@ Required properties:
 - fsl,capture-dma:  phandle to a node for the DMA channel to use for
                     capture (recording) of audio.  This is typically dictated
                     by SOC design.  See the notes below.
+- fsl,fifo-depth:   the number of elements in the transmit and receive FIFOs.
+                    This number is the maximum allowed value for SFCSR[TFWM0].
 
 Optional properties:
 - codec-handle	  : phandle to a 'codec' node that defines an audio
diff --git a/arch/powerpc/boot/dts/mpc8610_hpcd.dts b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
index f724d72c7b9..1bd3ebe1143 100644
--- a/arch/powerpc/boot/dts/mpc8610_hpcd.dts
+++ b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
@@ -217,6 +217,7 @@
 			codec-handle = <&cs4270>;
 			fsl,playback-dma = <&dma00>;
 			fsl,capture-dma = <&dma01>;
+			fsl,fifo-depth = <8>;
 		};
 
 		ssi@16100 {
@@ -225,6 +226,7 @@
 			reg = <0x16100 0x100>;
 			interrupt-parent = <&mpic>;
 			interrupts = <63 2>;
+			fsl,fifo-depth = <8>;
 		};
 
 		dma@21300 {