[PATCH v6 08/10] ARM: dts: aspeed: catalina: Enable multi-master on additional I2C buses

Potin Lai potin.lai.pt at gmail.com
Fri Mar 21 00:26:09 PDT 2025


Update the device tree to enable `multi-master` mode on I2C buses shared
between the host BMC and the NV module with HMC. This ensures proper bus
arbitration and coordination in multi-master environments, preventing
communication conflicts and improving reliability.

Signed-off-by: Potin Lai <potin.lai.pt at gmail.com>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
index 6702be32918e..2dbb65db9250 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
@@ -815,6 +815,7 @@ ssif-bmc at 10 {
 
 &i2c12 {
 	status = "okay";
+	multi-master;
 
 	// Module 1 FRU EEPROM
 	eeprom at 50 {
@@ -825,6 +826,7 @@ eeprom at 50 {
 
 &i2c13 {
 	status = "okay";
+	multi-master;
 
 	// Module 0 FRU EEPROM
 	eeprom at 50 {

-- 
2.31.1




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