The IPMI KCS device part of the LPC interface and is used for communication with the host processor.
Keyboard Controller Style Interfaces: The KCS channel number is assigned by AST_usrGuide_KCS.pdf Name | Use | Address | KCS Channel | SMS Interface | SMS | 0CA2h – 0CA3h | kcs3 | SMM Interface | SMI handling | 0CA4h – 0CA5h | kcs4 | Signed-off-by: Haiyue Wang <haiyue.w...@linux.intel.com> --- The kcs_bmc_aspeed driver is in linux-next now: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/char/ipmi/kcs_bmc_aspeed.c?h=next-20180329 --- arch/arm/boot/dts/aspeed-g5.dtsi | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi index 17ee0fa3..8d6c4af 100644 --- a/arch/arm/boot/dts/aspeed-g5.dtsi +++ b/arch/arm/boot/dts/aspeed-g5.dtsi @@ -268,8 +268,22 @@ ranges = <0x0 0x1e789000 0x1000>; lpc_bmc: lpc-bmc@0 { - compatible = "aspeed,ast2500-lpc-bmc"; + compatible = "aspeed,ast2500-lpc-bmc", "simple-mfd", "syscon"; reg = <0x0 0x80>; + reg-io-width = <4>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x0 0x80>; + + kcs3: kcs3@0 { + compatible = "aspeed,ast2500-kcs-bmc"; + reg = <0x0 0x80>; + interrupts = <8>; + kcs_chan = <3>; + kcs_addr = <0xca2>; + status = "disabled"; + }; }; lpc_host: lpc-host@80 { @@ -281,6 +295,15 @@ #size-cells = <1>; ranges = <0x0 0x80 0x1e0>; + kcs4: kcs4@0 { + compatible = "aspeed,ast2500-kcs-bmc"; + reg = <0x0 0xa0>; + interrupts = <8>; + kcs_chan = <4>; + kcs_addr = <0xca4>; + status = "disabled"; + }; + lpc_ctrl: lpc-ctrl@0 { compatible = "aspeed,ast2500-lpc-ctrl"; reg = <0x0 0x80>; -- 2.7.4
