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Diffstat (limited to 'Documentation/devicetree/bindings/powerpc/4xx/hsta.txt')
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diff --git a/Documentation/devicetree/bindings/powerpc/4xx/hsta.txt b/Documentation/devicetree/bindings/powerpc/4xx/hsta.txt new file mode 100644 index 000000000000..c737c8338705 --- /dev/null +++ b/Documentation/devicetree/bindings/powerpc/4xx/hsta.txt | |||
| @@ -0,0 +1,19 @@ | |||
| 1 | |||
| 2 | ppc476gtr High Speed Serial Assist (HSTA) node | ||
| 3 | ============================================== | ||
| 4 | |||
| 5 | The 476gtr SoC contains a high speed serial assist module attached | ||
| 6 | between the plb4 and plb6 system buses to provide high speed data | ||
| 7 | transfer between memory and system peripherals as well as support for | ||
| 8 | PCI message signalled interrupts. | ||
| 9 | |||
| 10 | Currently only the MSI support is used by Linux using the following | ||
| 11 | device tree entries: | ||
| 12 | |||
| 13 | Require properties: | ||
| 14 | - compatible : "ibm,476gtr-hsta-msi", "ibm,hsta-msi" | ||
| 15 | - reg : register mapping for the HSTA MSI space | ||
| 16 | - interrupt-parent : parent controller for mapping interrupts | ||
| 17 | - interrupts : ordered interrupt mapping for each MSI in the register | ||
| 18 | space. The first interrupt should be associated with a | ||
| 19 | register offset of 0x00, the second to 0x10, etc. | ||
