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 <[email protected]>
---
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