# \[PATCH\] ARM: dts: rainier: Enable KCS channels 2 and 3

- From: Andrew Jeffery \<hidden\>
- Date: 2021-06-18 06:03:22 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2021/06/1418666
- Thread: https://ratatoskr.run/linux-devicetree/2021/06/1418666/t.md

```text
KCS 2 and 3 are used as out-of-band signalling channels between the host
and the BMC on the Rainier platform.

Signed-off-by: Andrew Jeffery <redacted>
---
 arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 941c0489479a..38aad878d482 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -1780,3 +1780,14 @@ &xdma {
 	status = "okay";
 	memory-region = <&vga_memory>;
 };
+
+&kcs2 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca8 0xcac>;
+};
+
+&kcs3 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca2>;
+	aspeed,lpc-interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+};
-- 
2.30.2

```