diff --git a/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt b/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt
new file mode 100644
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+++ b/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt
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+Message unit node:
+
+For SRIO controllers that implement the message unit as part of the controller
+this node is required.  For devices with RMAN this node should NOT exist.  The
+node is composed of three types of sub-nodes ("fsl-srio-msg-unit",
+"fsl-srio-dbell-unit" and "fsl-srio-port-write-unit").
+
+See srio.txt for more details about generic SRIO controller details.
+
+   - compatible
+	Usage: required
+	Value type: <string>
+	Definition: Must include "fsl,srio-rmu-vX.Y", "fsl,srio-rmu".
+
+	The version X.Y should match the general SRIO controller's IP Block
+	revision register's Major(X) and Minor (Y) value.
+
+   - reg
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: A standard property.  Specifies the physical address and
+		length of the SRIO configuration registers for message units
+		and doorbell units.
+
+   - fsl,liodn
+	Usage: optional-but-recommended (for devices with PAMU)
+	Value type: <prop-encoded-array>
+	Definition: The logical I/O device number for the PAMU (IOMMU) to be
+		correctly configured for SRIO accesses.  The property should
+		not exist on devices that do not support PAMU.
+
+		The LIODN value is associated with all RMU transactions
+		(msg-unit, doorbell, port-write).
+
+Sub-Nodes for RMU:  The RMU node is composed of multiple sub-nodes that
+correspond to the actual sub-controllers in the RMU.  The manual for a given
+SoC will detail which and how many of these sub-controllers are implemented.
+
+Message Unit:
+
+   - compatible
+	Usage: required
+	Value type: <string>
+	Definition: Must include "fsl,srio-msg-unit-vX.Y", "fsl,srio-msg-unit".
+
+	The version X.Y should match the general SRIO controller's IP Block
+	revision register's Major(X) and Minor (Y) value.
+
+   - reg
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: A standard property.  Specifies the physical address and
+		length of the SRIO configuration registers for message units
+		and doorbell units.
+
+   - interrupts
+	Usage: required
+	Value type: <prop_encoded-array>
+	Definition:  Specifies the interrupts generated by this device.  The
+		value of the interrupts property consists of one interrupt
+		specifier. The format of the specifier is defined by the
+		binding document describing the node's interrupt parent.
+
+		A pair of IRQs are specified in this property.  The first
+		element is associated with the transmit (TX) interrupt and the
+		second element is associated with the receive (RX) interrupt.
+
+Doorbell Unit:
+
+   - compatible
+	Usage: required
+	Value type: <string>
+	Definition: Must include:
+		"fsl,srio-dbell-unit-vX.Y", "fsl,srio-dbell-unit"
+
+	The version X.Y should match the general SRIO controller's IP Block
+	revision register's Major(X) and Minor (Y) value.
+
+   - reg
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: A standard property.  Specifies the physical address and
+		length of the SRIO configuration registers for message units
+		and doorbell units.
+
+   - interrupts
+	Usage: required
+	Value type: <prop_encoded-array>
+	Definition:  Specifies the interrupts generated by this device.  The
+		value of the interrupts property consists of one interrupt
+		specifier. The format of the specifier is defined by the
+		binding document describing the node's interrupt parent.
+
+		A pair of IRQs are specified in this property.  The first
+		element is associated with the transmit (TX) interrupt and the
+		second element is associated with the receive (RX) interrupt.
+
+Port-Write Unit:
+
+   - compatible
+	Usage: required
+	Value type: <string>
+	Definition: Must include:
+		 "fsl,srio-port-write-unit-vX.Y", "fsl,srio-port-write-unit"
+
+	The version X.Y should match the general SRIO controller's IP Block
+	revision register's Major(X) and Minor (Y) value.
+
+   - reg
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: A standard property.  Specifies the physical address and
+		length of the SRIO configuration registers for message units
+		and doorbell units.
+
+   - interrupts
+	Usage: required
+	Value type: <prop_encoded-array>
+	Definition:  Specifies the interrupts generated by this device.  The
+		value of the interrupts property consists of one interrupt
+		specifier. The format of the specifier is defined by the
+		binding document describing the node's interrupt parent.
+
+		A single IRQ that handles port-write conditions is
+		specified by this property.  (Typically shared with error).
+
+   Note: All other standard properties (see the ePAPR) are allowed
+   but are optional.
+
+Example:
+	rmu: rmu@d3000 {
+		compatible = "fsl,srio-rmu";
+		reg = <0xd3000 0x400>;
+		ranges = <0x0 0xd3000 0x400>;
+		fsl,liodn = <0xc8>;
+
+		message-unit@0 {
+			compatible = "fsl,srio-msg-unit";
+			reg = <0x0 0x100>;
+			interrupts = <
+				60 2 0 0  /* msg1_tx_irq */
+				61 2 0 0>;/* msg1_rx_irq */
+		};
+		message-unit@100 {
+			compatible = "fsl,srio-msg-unit";
+			reg = <0x100 0x100>;
+			interrupts = <
+				62 2 0 0  /* msg2_tx_irq */
+				63 2 0 0>;/* msg2_rx_irq */
+		};
+		doorbell-unit@400 {
+			compatible = "fsl,srio-dbell-unit";
+			reg = <0x400 0x80>;
+			interrupts = <
+				56 2 0 0  /* bell_outb_irq */
+				57 2 0 0>;/* bell_inb_irq */
+		};
+		port-write-unit@4e0 {
+			compatible = "fsl,srio-port-write-unit";
+			reg = <0x4e0 0x20>;
+			interrupts = <16 2 1 11>;
+		};
+	};
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/srio.txt b/Documentation/devicetree/bindings/powerpc/fsl/srio.txt
new file mode 100644
index 0000000..b039bcb
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/fsl/srio.txt
@@ -0,0 +1,103 @@
+* Freescale Serial RapidIO (SRIO) Controller
+
+RapidIO port node:
+Properties:
+   - compatible
+	Usage: required
+	Value type: <string>
+	Definition: Must include "fsl,srio" for IP blocks with IP Block
+	Revision Register (SRIO IPBRR1) Major ID equal to 0x01c0.
+
+	Optionally, a compatiable string of "fsl,srio-vX.Y" where X is Major
+	version in IP Block Revision Register and Y is Minor version.  If this
+	compatiable is provided it should be ordered before "fsl,srio".
+
+   - reg
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: A standard property.  Specifies the physical address and
+		length of the SRIO configuration registers.  The size should
+		be set to 0x11000.
+
+   - interrupts
+	Usage: required
+	Value type: <prop_encoded-array>
+	Definition:  Specifies the interrupts generated by this device.  The
+		value of the interrupts property consists of one interrupt
+		specifier. The format of the specifier is defined by the
+		binding document describing the node's interrupt parent.
+
+		A single IRQ that handles error conditions is specified by this
+		property.  (Typically shared with port-write).
+
+   - fsl,srio-rmu-handle:
+	Usage: required if rmu node is defined
+	Value type: <phandle>
+	Definition: A single <phandle> value that points to the RMU.
+	(See srio-rmu.txt for more details on RMU node binding)
+
+Port Child Nodes:  There should a port child node for each port that exists in
+the controller.  The ports are numbered starting at one (1) and should have
+the following properties:
+
+   - cell-index
+	Usage: required
+	Value type: <u32>
+	Definition: A standard property.  Matches the port id.
+
+   - ranges
+	Usage: required if local access windows preset
+	Value type: <prop-encoded-array>
+	Definition: A standard property. Utilized to describe the memory mapped
+		IO space utilized by the controller.  This corresponds to the
+		setting of the local access windows that are targeted to this
+		SRIO port.
+
+   - fsl,liodn
+	Usage: optional-but-recommended (for devices with PAMU)
+	Value type: <prop-encoded-array>
+	Definition: The logical I/O device number for the PAMU (IOMMU) to be
+		correctly configured for SRIO accesses.  The property should
+		not exist on devices that do not support PAMU.
+
+		For HW (ie, the P4080) that only supports a LIODN for both
+		memory and maintenance transactions then a single LIODN is
+		represented in the property for both transactions.
+
+		For HW (ie, the P304x/P5020, etc) that supports an LIODN for
+		memory transactions and a unique LIODN for maintenance
+		transactions then a pair of LIODNs are represented in the
+		property.  Within the pair, the first element represents the
+		LIODN associated with memory transactions and the second element
+		represents the LIODN associated with maintenance transactions
+		for the port.
+
+Note: All other standard properties (see ePAPR) are allowed but are optional.
+
+Example:
+
+	rapidio: rapidio@ffe0c0000 {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		reg = <0xf 0xfe0c0000 0 0x11000>;
+		compatible = "fsl,srio";
+		interrupts = <16 2 1 11>; /* err_irq */
+		fsl,srio-rmu-handle = <&rmu>;
+		ranges;
+
+		port1 {
+			cell-index = <1>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			fsl,liodn = <34>;
+			ranges = <0 0 0xc 0x20000000 0 0x10000000>;
+		};
+
+		port2 {
+			cell-index = <2>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			fsl,liodn = <48>;
+			ranges = <0 0 0xc 0x30000000 0 0x10000000>;
+		};
+	};
