105 lines
3.3 KiB
Plaintext
105 lines
3.3 KiB
Plaintext
* Freescale Serial RapidIO (SRIO) Controller
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RapidIO port node:
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Properties:
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,srio" for IP blocks with IP Block
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Revision Register (SRIO IPBRR1) Major ID equal to 0x01c0.
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Optionally, a compatible string of "fsl,srio-vX.Y" where X is Major
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version in IP Block Revision Register and Y is Minor version. If this
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compatible is provided it should be ordered before "fsl,srio".
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the physical address and
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length of the SRIO configuration registers. The size should
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be set to 0x11000.
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- interrupts
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Usage: required
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Value type: <prop_encoded-array>
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Definition: Specifies the interrupts generated by this device. The
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value of the interrupts property consists of one interrupt
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specifier. The format of the specifier is defined by the
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binding document describing the node's interrupt parent.
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A single IRQ that handles error conditions is specified by this
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property. (Typically shared with port-write).
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- fsl,srio-rmu-handle:
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Usage: required if rmu node is defined
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Value type: <phandle>
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Definition: A single <phandle> value that points to the RMU.
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(See srio-rmu.txt for more details on RMU node binding)
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Port Child Nodes: There should a port child node for each port that exists in
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the controller. The ports are numbered starting at one (1) and should have
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the following properties:
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- cell-index
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Usage: required
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Value type: <u32>
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Definition: A standard property. Matches the port id.
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- ranges
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Usage: required if local access windows preset
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Value type: <prop-encoded-array>
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Definition: A standard property. Utilized to describe the memory mapped
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IO space utilized by the controller. This corresponds to the
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setting of the local access windows that are targeted to this
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SRIO port.
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- fsl,liodn
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Usage: optional-but-recommended (for devices with PAMU)
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Value type: <prop-encoded-array>
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Definition: The logical I/O device number for the PAMU (IOMMU) to be
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correctly configured for SRIO accesses. The property should
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not exist on devices that do not support PAMU.
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For HW (ie, the P4080) that only supports a LIODN for both
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memory and maintenance transactions then a single LIODN is
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represented in the property for both transactions.
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For HW (ie, the P304x/P5020, etc) that supports an LIODN for
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memory transactions and a unique LIODN for maintenance
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transactions then a pair of LIODNs are represented in the
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property. Within the pair, the first element represents the
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LIODN associated with memory transactions and the second element
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represents the LIODN associated with maintenance transactions
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for the port.
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Note: All other standard properties (see the Devicetree Specification)
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are allowed but are optional.
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Example:
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rapidio: rapidio@ffe0c0000 {
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#address-cells = <2>;
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#size-cells = <2>;
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reg = <0xf 0xfe0c0000 0 0x11000>;
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compatible = "fsl,srio";
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interrupts = <16 2 1 11>; /* err_irq */
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fsl,srio-rmu-handle = <&rmu>;
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ranges;
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port1 {
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cell-index = <1>;
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#address-cells = <2>;
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#size-cells = <2>;
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fsl,liodn = <34>;
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ranges = <0 0 0xc 0x20000000 0 0x10000000>;
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};
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port2 {
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cell-index = <2>;
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#address-cells = <2>;
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#size-cells = <2>;
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fsl,liodn = <48>;
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ranges = <0 0 0xc 0x30000000 0 0x10000000>;
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};
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};
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