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| -rw-r--r-- | Documentation/devicetree/bindings/mfd/aspeed-lpc.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt index 514d82ced95b..69aadee00d5f 100644 --- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt +++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt @@ -109,9 +109,50 @@ lpc: lpc@1e789000 { }; }; +BMC Node Children +================== + + Host Node Children ================== +LPC Host Interface Controller +------------------- + +The LPC Host Interface Controller manages functions exposed to the host such as +LPC firmware hub cycles, configuration of the LPC-to-AHB mapping, UART +management and bus snoop configuration. + +Required properties: + +- compatible: One of: + "aspeed,ast2400-lpc-ctrl"; + "aspeed,ast2500-lpc-ctrl"; + +- reg: contains offset/length values of the host interface controller + memory regions + +- clocks: contains a phandle to the syscon node describing the clocks. + There should then be one cell representing the clock to use + +- memory-region: A phandle to a reserved_memory region to be used for the LPC + to AHB mapping + +- flash: A phandle to the SPI flash controller containing the flash to + be exposed over the LPC to AHB mapping + +Example: + +lpc-host@80 { + lpc_ctrl: lpc-ctrl@0 { + compatible = "aspeed,ast2500-lpc-ctrl"; + reg = <0x0 0x80>; + clocks = <&syscon ASPEED_CLK_GATE_LCLK>; + memory-region = <&flash_memory>; + flash = <&spi>; + }; +}; + LPC Host Controller ------------------- |