hsta.txt

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    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 - interrupts            : ordered interrupt mapping for each MSI in the register
   17                           space. The first interrupt should be associated with a
   18                           register offset of 0x00, the second to 0x10, etc.

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/powerpc/4xx/hsta.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/powerpc/4xx/hsta.txt