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Diffstat (limited to 'Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt')
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diff --git a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt new file mode 100644 index 000000000000..70558c3f3682 --- /dev/null +++ b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt | |||
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1 | * Freescale MSI interrupt controller | ||
2 | |||
3 | Required properties: | ||
4 | - compatible : compatible list, contains 2 entries, | ||
5 | first is "fsl,CHIP-msi", where CHIP is the processor(mpc8610, mpc8572, | ||
6 | etc.) and the second is "fsl,mpic-msi" or "fsl,ipic-msi" depending on | ||
7 | the parent type. | ||
8 | |||
9 | - reg : should contain the address and the length of the shared message | ||
10 | interrupt register set. | ||
11 | |||
12 | - msi-available-ranges: use <start count> style section to define which | ||
13 | msi interrupt can be used in the 256 msi interrupts. This property is | ||
14 | optional, without this, all the 256 MSI interrupts can be used. | ||
15 | Each available range must begin and end on a multiple of 32 (i.e. | ||
16 | no splitting an individual MSI register or the associated PIC interrupt). | ||
17 | |||
18 | - interrupts : each one of the interrupts here is one entry per 32 MSIs, | ||
19 | and routed to the host interrupt controller. the interrupts should | ||
20 | be set as edge sensitive. If msi-available-ranges is present, only | ||
21 | the interrupts that correspond to available ranges shall be present. | ||
22 | |||
23 | - interrupt-parent: the phandle for the interrupt controller | ||
24 | that services interrupts for this device. for 83xx cpu, the interrupts | ||
25 | are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed | ||
26 | to MPIC. | ||
27 | |||
28 | Example: | ||
29 | msi@41600 { | ||
30 | compatible = "fsl,mpc8610-msi", "fsl,mpic-msi"; | ||
31 | reg = <0x41600 0x80>; | ||
32 | msi-available-ranges = <0 0x100>; | ||
33 | interrupts = < | ||
34 | 0xe0 0 | ||
35 | 0xe1 0 | ||
36 | 0xe2 0 | ||
37 | 0xe3 0 | ||
38 | 0xe4 0 | ||
39 | 0xe5 0 | ||
40 | 0xe6 0 | ||
41 | 0xe7 0>; | ||
42 | interrupt-parent = <&mpic>; | ||
43 | }; | ||