diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index c36dcd2..ce5d67f 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1861,9 +1861,7 @@
 
    Properties:
    - compatible : "fsl,cpm1", "fsl,cpm2", or "fsl,qe".
-   - reg : The first resource is a 48-byte region beginning with
-           CPCR.  The second is the available general-purpose
-           DPRAM.
+   - reg : A 48-byte region beginning with CPCR.
 
    Example:
 	cpm@119c0 {
@@ -1871,7 +1869,7 @@
 		#size-cells = <1>;
 		#interrupt-cells = <2>;
 		compatible = "fsl,mpc8272-cpm", "fsl,cpm2";
-		reg = <119c0 30 0 2000>;
+		reg = <119c0 30>;
 	}
 
    ii) Properties common to mulitple CPM/QE devices
@@ -2017,6 +2015,40 @@
 		fsl,cpm-command = <2e600000>;
 	};
 
+   viii) Multi-User RAM (MURAM)
+
+   The multi-user/dual-ported RAM is expressed as a bus under the CPM node.
+
+   Ranges must be set up subject to the following restrictions:
+
+   - Children's reg nodes must be offsets from the start of all muram, even
+     if the user-data area does not begin at zero.
+   - If multiple range entries are used, the difference between the parent
+     address and the child address must be the same in all, so that a single
+     mapping can cover them all while maintaining the ability to determine
+     CPM-side offsets with pointer subtraction.  It is recommended that
+     multiple range entries not be used.
+   - A child address of zero must be translatable, even if no reg resources
+     contain it.
+
+   A child "data" node must exist, compatible with "fsl,cpm-muram-data", to
+   indicate the portion of muram that is usable by the OS for arbitrary
+   purposes.  The data node may have an arbitrary number of reg resources,
+   all of which contribute to the allocatable muram pool.
+
+   Example, based on mpc8272:
+
+	muram@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0 10000>;
+
+		data@0 {
+			compatible = "fsl,cpm-muram-data";
+			reg = <0 2000 9800 800>;
+		};
+	};
+
    m) Chipselect/Local Bus
 
    Properties: