The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/memory-controllers/brcm,dpfe-cpu.txt

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    1 DDR PHY Front End (DPFE) for Broadcom STB
    2 =========================================
    3 
    4 DPFE and the DPFE firmware provide an interface for the host CPU to
    5 communicate with the DCPU, which resides inside the DDR PHY.
    6 
    7 There are three memory regions for interacting with the DCPU. These are
    8 specified in a single reg property.
    9 
   10 Required properties:
   11   - compatible: must be "brcm,bcm7271-dpfe-cpu", "brcm,bcm7268-dpfe-cpu"
   12     or "brcm,dpfe-cpu"
   13   - reg: must reference three register ranges
   14       - start address and length of the DCPU register space
   15       - start address and length of the DCPU data memory space
   16       - start address and length of the DCPU instruction memory space
   17   - reg-names: must contain "dpfe-cpu", "dpfe-dmem", and "dpfe-imem";
   18         they must be in the same order as the register declarations
   19 
   20 Example:
   21         dpfe_cpu0: dpfe-cpu@f1132000 {
   22                 compatible = "brcm,bcm7271-dpfe-cpu", "brcm,dpfe-cpu";
   23                 reg =  <0xf1132000 0x180
   24                         0xf1134000 0x1000
   25                         0xf1138000 0x4000>;
   26                 reg-names = "dpfe-cpu", "dpfe-dmem", "dpfe-imem";
   27         };

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