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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>;
- };
- };