0001 * Freescale 85xx RAID Engine nodes
0002
0003 RAID Engine nodes are defined to describe on-chip RAID accelerators. Each RAID
0004 Engine should have a separate node.
0005
0006 Supported chips:
0007 P5020, P5040
0008
0009 Required properties:
0010
0011 - compatible: Should contain "fsl,raideng-v1.0" as the value
0012 This identifies RAID Engine block. 1 in 1.0 represents
0013 major number whereas 0 represents minor number. The
0014 version matches the hardware IP version.
0015 - reg: offset and length of the register set for the device
0016 - ranges: standard ranges property specifying the translation
0017 between child address space and parent address space
0018
0019 Example:
0020 /* P5020 */
0021 raideng: raideng@320000 {
0022 compatible = "fsl,raideng-v1.0";
0023 #address-cells = <1>;
0024 #size-cells = <1>;
0025 reg = <0x320000 0x10000>;
0026 ranges = <0 0x320000 0x10000>;
0027 };
0028
0029
0030 There must be a sub-node for each job queue present in RAID Engine
0031 This node must be a sub-node of the main RAID Engine node
0032
0033 - compatible: Should contain "fsl,raideng-v1.0-job-queue" as the value
0034 This identifies the job queue interface
0035 - reg: offset and length of the register set for job queue
0036 - ranges: standard ranges property specifying the translation
0037 between child address space and parent address space
0038
0039 Example:
0040 /* P5020 */
0041 raideng_jq0@1000 {
0042 compatible = "fsl,raideng-v1.0-job-queue";
0043 reg = <0x1000 0x1000>;
0044 ranges = <0x0 0x1000 0x1000>;
0045 };
0046
0047
0048 There must be a sub-node for each job ring present in RAID Engine
0049 This node must be a sub-node of job queue node
0050
0051 - compatible: Must contain "fsl,raideng-v1.0-job-ring" as the value
0052 This identifies job ring. Should contain either
0053 "fsl,raideng-v1.0-hp-ring" or "fsl,raideng-v1.0-lp-ring"
0054 depending upon whether ring has high or low priority
0055 - reg: offset and length of the register set for job ring
0056 - interrupts: interrupt mapping for job ring IRQ
0057
0058 Optional property:
0059
0060 - fsl,liodn: Specifies the LIODN to be used for Job Ring. This
0061 property is normally set by firmware. Value
0062 is of 12-bits which is the LIODN number for this JR.
0063 This property is used by the IOMMU (PAMU) to distinquish
0064 transactions from this JR and than be able to do address
0065 translation & protection accordingly.
0066
0067 Example:
0068 /* P5020 */
0069 raideng_jq0@1000 {
0070 compatible = "fsl,raideng-v1.0-job-queue";
0071 reg = <0x1000 0x1000>;
0072 ranges = <0x0 0x1000 0x1000>;
0073
0074 raideng_jr0: jr@0 {
0075 compatible = "fsl,raideng-v1.0-job-ring", "fsl,raideng-v1.0-hp-ring";
0076 reg = <0x0 0x400>;
0077 interrupts = <139 2 0 0>;
0078 interrupt-parent = <&mpic>;
0079 fsl,liodn = <0x41>;
0080 };
0081 };
