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>.
44 DMA0: dma0@400100100 {
45 compatible = "ibm,dma-440spe";
47 reg = <0x00000004 0x00100100 0x100>;
48 dcr-reg = <0x060 0x020>;
49 interrupt-parent = <&DMA0>;
51 #interrupt-cells = <1>;
60 iii) XOR Accelerator node
64 - compatible : "amcc,xor-accelerator";
65 - reg : <registers mapping>
66 - interrupts : <interrupt mapping for XOR interrupt source>
71 compatible = "amcc,xor-accelerator";
72 reg = <0x00000004 0x00200000 0x400>;
73 interrupt-parent = <&UIC1>;
74 interrupts = <0x1f 4>;
78 iv) Memory Queue Module node
82 - compatible : "ibm,mq-440spe";
83 - dcr-reg : <DCR registers range>
88 compatible = "ibm,mq-440spe";
89 dcr-reg = <0x040 0x020>;