From: Daniel Hsu <d486250@gmail.com>
Date: Fri, 26 Sep 2025 02:59:52 +0000 (+0800)
Subject: ARM: dts: aspeed: harma: Add MCTP I2C controller node
X-Git-Tag: v6.19-rc1~100^2~33^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b223bd48f98d06189188c66e5b244024806080a;p=thirdparty%2Fkernel%2Flinux.git

ARM: dts: aspeed: harma: Add MCTP I2C controller node

The Facebook Harma BMC uses I2C1 as an MCTP (Management Component
Transport Protocol) bus. This patch enables the controller by
adding the `mctp-i2c-controller` node under I2C1, with multi-master
support.

Signed-off-by: Daniel Hsu <Daniel-Hsu@quantatw.com>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
---

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
index b733efe31e8d2..1c50e4a367b24 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
@@ -240,6 +240,14 @@
 &i2c1 {
 	status = "okay";
 
+	mctp-controller;
+	multi-master;
+
+	mctp@10 {
+		compatible = "mctp-i2c-controller";
+		reg = <(0x10 | I2C_OWN_SLAVE_ADDRESS)>;
+	};
+
 	temperature-sensor@4b {
 		compatible = "ti,tmp75";
 		reg = <0x4b>;