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/ipmi/aspeed-kcs-bmc.txt

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    1 # Aspeed KCS (Keyboard Controller Style) IPMI interface
    2 
    3 The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
    4 (Baseboard Management Controllers) and the KCS interface can be
    5 used to perform in-band IPMI communication with their host.
    6 
    7 ## v1
    8 Required properties:
    9 - compatible : should be one of
   10     "aspeed,ast2400-kcs-bmc"
   11     "aspeed,ast2500-kcs-bmc"
   12 - interrupts : interrupt generated by the controller
   13 - kcs_chan : The LPC channel number in the controller
   14 - kcs_addr : The host CPU IO map address
   15 
   16 ## v2
   17 Required properties:
   18 - compatible : should be one of
   19     "aspeed,ast2400-kcs-bmc-v2"
   20     "aspeed,ast2500-kcs-bmc-v2"
   21 - reg : The address and size of the IDR, ODR and STR registers
   22 - interrupts : interrupt generated by the controller
   23 - aspeed,lpc-io-reg : The host CPU LPC IO address for the device
   24 
   25 Example:
   26 
   27     kcs3: kcs@24 {
   28         compatible = "aspeed,ast2500-kcs-bmc-v2";
   29         reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
   30         aspeed,lpc-reg = <0xca2>;
   31         interrupts = <8>;
   32         status = "okay";
   33     };

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