1 * Freescale 85xx RAID Engine nodes
2
3 RAID Engine nodes are defined to describe on-chip RAID accelerators. Each RAID
4 Engine should have a separate node.
5
6 Supported chips:
7 P5020, P5040
8
9 Required properties:
10
11 - compatible: Should contain "fsl,raideng-v1.0" as the value
12 This identifies RAID Engine block. 1 in 1.0 represents
13 major number whereas 0 represents minor number. The
14 version matches the hardware IP version.
15 - reg: offset and length of the register set for the device
16 - ranges: standard ranges property specifying the translation
17 between child address space and parent address space
18
19 Example:
20 /* P5020 */
21 raideng: raideng@320000 {
22 compatible = "fsl,raideng-v1.0";
23 #address-cells = <1>;
24 #size-cells = <1>;
25 reg = <0x320000 0x10000>;
26 ranges = <0 0x320000 0x10000>;
27 };
28
29
30 There must be a sub-node for each job queue present in RAID Engine
31 This node must be a sub-node of the main RAID Engine node
32
33 - compatible: Should contain "fsl,raideng-v1.0-job-queue" as the value
34 This identifies the job queue interface
35 - reg: offset and length of the register set for job queue
36 - ranges: standard ranges property specifying the translation
37 between child address space and parent address space
38
39 Example:
40 /* P5020 */
41 raideng_jq0@1000 {
42 compatible = "fsl,raideng-v1.0-job-queue";
43 reg = <0x1000 0x1000>;
44 ranges = <0x0 0x1000 0x1000>;
45 };
46
47
48 There must be a sub-node for each job ring present in RAID Engine
49 This node must be a sub-node of job queue node
50
51 - compatible: Must contain "fsl,raideng-v1.0-job-ring" as the value
52 This identifies job ring. Should contain either
53 "fsl,raideng-v1.0-hp-ring" or "fsl,raideng-v1.0-lp-ring"
54 depending upon whether ring has high or low priority
55 - reg: offset and length of the register set for job ring
56 - interrupts: interrupt mapping for job ring IRQ
57
58 Optional property:
59
60 - fsl,liodn: Specifies the LIODN to be used for Job Ring. This
61 property is normally set by firmware. Value
62 is of 12-bits which is the LIODN number for this JR.
63 This property is used by the IOMMU (PAMU) to distinguish
64 transactions from this JR and than be able to do address
65 translation & protection accordingly.
66
67 Example:
68 /* P5020 */
69 raideng_jq0@1000 {
70 compatible = "fsl,raideng-v1.0-job-queue";
71 reg = <0x1000 0x1000>;
72 ranges = <0x0 0x1000 0x1000>;
73
74 raideng_jr0: jr@0 {
75 compatible = "fsl,raideng-v1.0-job-ring", "fsl,raideng-v1.0-hp-ring";
76 reg = <0x0 0x400>;
77 interrupts = <139 2 0 0>;
78 interrupt-parent = <&mpic>;
79 fsl,liodn = <0x41>;
80 };
81 };
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