| * 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>; |
| }; |
| }; |
