1 PPC440SPe DMA/XOR (DMA Controller and XOR Accelerator)
3 Device nodes needed for operation of the ppc440spe-adma driver
4 are specified hereby. These are I2O/DMA, DMA and XOR nodes
5 for DMA engines and Memory Queue Module node. The latter is used
6 by ADMA driver for configuration of RAID-6 H/W capabilities of
7 the PPC440SPe. In addition to the nodes and properties described
8 below, the ranges property of PLB node must specify ranges for
15 - compatible : "ibm,i2o-440spe";
16 - reg : <registers mapping>
17 - dcr-reg : <DCR registers range>
22 compatible = "ibm,i2o-440spe";
23 reg = <0x00000004 0x00100000 0x100>;
24 dcr-reg = <0x060 0x020>;
32 - compatible : "ibm,dma-440spe";
33 - cell-index : 1 cell, hardware index of the DMA engine
34 (typically 0x0 and 0x1 for DMA0 and DMA1)
35 - reg : <registers mapping>
36 - dcr-reg : <DCR registers range>
37 - interrupts : <interrupt mapping for DMA0/1 interrupts sources:
38 2 sources: DMAx CS FIFO Needs Service IRQ (on UIC0)
39 and DMA Error IRQ (on UIC1). The latter is common
40 for both DMA engines>.
41 - interrupt-parent : needed for interrupt mapping
45 DMA0: dma0@400100100 {
46 compatible = "ibm,dma-440spe";
48 reg = <0x00000004 0x00100100 0x100>;
49 dcr-reg = <0x060 0x020>;
50 interrupt-parent = <&DMA0>;
52 #interrupt-cells = <1>;
61 iii) XOR Accelerator node
65 - compatible : "amcc,xor-accelerator";
66 - reg : <registers mapping>
67 - interrupts : <interrupt mapping for XOR interrupt source>
68 - interrupt-parent : for interrupt mapping
73 compatible = "amcc,xor-accelerator";
74 reg = <0x00000004 0x00200000 0x400>;
75 interrupt-parent = <&UIC1>;
76 interrupts = <0x1f 4>;
80 iv) Memory Queue Module node
84 - compatible : "ibm,mq-440spe";
85 - dcr-reg : <DCR registers range>
90 compatible = "ibm,mq-440spe";
91 dcr-reg = <0x040 0x020>;