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1* Freescale 85xx RAID Engine nodes2 3RAID Engine nodes are defined to describe on-chip RAID accelerators. Each RAID4Engine should have a separate node.5 6Supported chips:7P5020, P50408 9Required properties:10 11- compatible: Should contain "fsl,raideng-v1.0" as the value12 This identifies RAID Engine block. 1 in 1.0 represents13 major number whereas 0 represents minor number. The14 version matches the hardware IP version.15- reg: offset and length of the register set for the device16- ranges: standard ranges property specifying the translation17 between child address space and parent address space18 19Example: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 30There must be a sub-node for each job queue present in RAID Engine31This node must be a sub-node of the main RAID Engine node32 33- compatible: Should contain "fsl,raideng-v1.0-job-queue" as the value34 This identifies the job queue interface35- reg: offset and length of the register set for job queue36- ranges: standard ranges property specifying the translation37 between child address space and parent address space38 39Example: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 48There must be a sub-node for each job ring present in RAID Engine49This node must be a sub-node of job queue node50 51- compatible: Must contain "fsl,raideng-v1.0-job-ring" as the value52 This identifies job ring. Should contain either53 "fsl,raideng-v1.0-hp-ring" or "fsl,raideng-v1.0-lp-ring"54 depending upon whether ring has high or low priority55- reg: offset and length of the register set for job ring56- interrupts: interrupt mapping for job ring IRQ57 58Optional property:59 60- fsl,liodn: Specifies the LIODN to be used for Job Ring. This61 property is normally set by firmware. Value62 is of 12-bits which is the LIODN number for this JR.63 This property is used by the IOMMU (PAMU) to distinguish64 transactions from this JR and than be able to do address65 translation & protection accordingly.66 67Example: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 };82