| * Freescale 85xx RAID Engine nodes | |
| RAID Engine nodes are defined to describe on-chip RAID accelerators. Each RAID | |
| Engine should have a separate node. | |
| Supported chips: | |
| P5020, P5040 | |
| Required properties: | |
| - compatible: Should contain "fsl,raideng-v1.0" as the value | |
| This identifies RAID Engine block. 1 in 1.0 represents | |
| major number whereas 0 represents minor number. The | |
| version matches the hardware IP version. | |
| - reg: offset and length of the register set for the device | |
| - ranges: standard ranges property specifying the translation | |
| between child address space and parent address space | |
| Example: | |
| /* P5020 */ | |
| raideng: raideng@320000 { | |
| compatible = "fsl,raideng-v1.0"; | |
| #address-cells = <1>; | |
| #size-cells = <1>; | |
| reg = <0x320000 0x10000>; | |
| ranges = <0 0x320000 0x10000>; | |
| }; | |
| There must be a sub-node for each job queue present in RAID Engine | |
| This node must be a sub-node of the main RAID Engine node | |
| - compatible: Should contain "fsl,raideng-v1.0-job-queue" as the value | |
| This identifies the job queue interface | |
| - reg: offset and length of the register set for job queue | |
| - ranges: standard ranges property specifying the translation | |
| between child address space and parent address space | |
| Example: | |
| /* P5020 */ | |
| raideng_jq0@1000 { | |
| compatible = "fsl,raideng-v1.0-job-queue"; | |
| reg = <0x1000 0x1000>; | |
| ranges = <0x0 0x1000 0x1000>; | |
| }; | |
| There must be a sub-node for each job ring present in RAID Engine | |
| This node must be a sub-node of job queue node | |
| - compatible: Must contain "fsl,raideng-v1.0-job-ring" as the value | |
| This identifies job ring. Should contain either | |
| "fsl,raideng-v1.0-hp-ring" or "fsl,raideng-v1.0-lp-ring" | |
| depending upon whether ring has high or low priority | |
| - reg: offset and length of the register set for job ring | |
| - interrupts: interrupt mapping for job ring IRQ | |
| Optional property: | |
| - fsl,liodn: Specifies the LIODN to be used for Job Ring. This | |
| property is normally set by firmware. Value | |
| is of 12-bits which is the LIODN number for this JR. | |
| This property is used by the IOMMU (PAMU) to distinquish | |
| transactions from this JR and than be able to do address | |
| translation & protection accordingly. | |
| Example: | |
| /* P5020 */ | |
| raideng_jq0@1000 { | |
| compatible = "fsl,raideng-v1.0-job-queue"; | |
| reg = <0x1000 0x1000>; | |
| ranges = <0x0 0x1000 0x1000>; | |
| raideng_jr0: jr@0 { | |
| compatible = "fsl,raideng-v1.0-job-ring", "fsl,raideng-v1.0-hp-ring"; | |
| reg = <0x0 0x400>; | |
| interrupts = <139 2 0 0>; | |
| interrupt-parent = <&mpic>; | |
| fsl,liodn = <0x41>; | |
| }; | |
| }; |