From 6b2e54f7babea6c782a9c1af9d01c7f999bb4c7d Mon Sep 17 00:00:00 2001 From: Haiyue Wang Date: Thu, 22 Mar 2018 20:50:15 +0800 Subject: ipmi: add an NPCM7xx KCS BMC driver This driver exposes the Keyboard Controller Style (KCS) interface on Novoton NPCM7xx SoCs as a character device. Such SOCs are commonly used as a BaseBoard Management Controller (BMC) on a server board, and KCS interface is commonly used to perform the in-band IPMI communication between the server and its BMC. Signed-off-by: Avi Fishman Signed-off-by: Haiyue Wang Signed-off-by: Corey Minyard --- .../devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt (limited to 'Documentation/devicetree/bindings/ipmi') diff --git a/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt new file mode 100644 index 000000000000..3538a214fff1 --- /dev/null +++ b/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt @@ -0,0 +1,39 @@ +* Nuvoton NPCM7xx KCS (Keyboard Controller Style) IPMI interface + +The Nuvoton SOCs (NPCM7xx) are commonly used as BMCs +(Baseboard Management Controllers) and the KCS interface can be +used to perform in-band IPMI communication with their host. + +Required properties: +- compatible : should be one of + "nuvoton,npcm750-kcs-bmc" +- interrupts : interrupt generated by the controller +- kcs_chan : The KCS channel number in the controller + +Example: + + lpc_kcs: lpc_kcs@f0007000 { + compatible = "nuvoton,npcm750-lpc-kcs", "simple-mfd", "syscon"; + reg = <0xf0007000 0x40>; + reg-io-width = <1>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0xf0007000 0x40>; + + kcs1: kcs1@0 { + compatible = "nuvoton,npcm750-kcs-bmc"; + reg = <0x0 0x40>; + interrupts = <0 9 4>; + kcs_chan = <1>; + status = "disabled"; + }; + + kcs2: kcs2@0 { + compatible = "nuvoton,npcm750-kcs-bmc"; + reg = <0x0 0x40>; + interrupts = <0 9 4>; + kcs_chan = <2>; + status = "disabled"; + }; + }; \ No newline at end of file -- cgit v1.2.3-59-g8ed1b