raideng.txt

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    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 distinquish
   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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sys/contrib/device-tree/Bindings/powerpc/fsl/raideng.txt