| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |