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authorHaiyue Wang <haiyue.wang@linux.intel.com>2018-02-02 10:16:11 +0800
committerCorey Minyard <cminyard@mvista.com>2018-02-26 09:21:28 -0600
commitbe2ed207e3745392478e85afa0bb02acdf44c966 (patch)
tree7627861753af3139d31c1dedcb91e08278ee048d /Documentation
parent20d60f61c58e8c937f3653819816dd203e6e3cb4 (diff)
ipmi: add an Aspeed KCS IPMI BMC driver
The KCS (Keyboard Controller Style) interface is used to perform in-band IPMI communication between a server host and its BMC (BaseBoard Management Controllers). This driver exposes the KCS interface on ASpeed SOCs (AST2400 and AST2500) as a character device. Such SOCs are commonly used as BMCs and this driver implements the BMC side of the KCS interface. Signed-off-by: Haiyue Wang <haiyue.wang@linux.intel.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt25
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
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index 000000000000..d98a9bf45d6c
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+++ b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
@@ -0,0 +1,25 @@
+* Aspeed KCS (Keyboard Controller Style) IPMI interface
+
+The Aspeed SOCs (AST2400 and AST2500) 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
+ "aspeed,ast2400-kcs-bmc"
+ "aspeed,ast2500-kcs-bmc"
+- interrupts : interrupt generated by the controller
+- kcs_chan : The LPC channel number in the controller
+- kcs_addr : The host CPU IO map address
+
+
+Example:
+
+ kcs3: kcs3@0 {
+ compatible = "aspeed,ast2500-kcs-bmc";
+ reg = <0x0 0x80>;
+ interrupts = <8>;
+ kcs_chan = <3>;
+ kcs_addr = <0xCA2>;
+ status = "okay";
+ };