[PATCH v1 5/7] ARM: dts: aspeed: system1: disable NCSI net port

Ninad Palsule
2026-04-21T22:46:31Z

From: Andrew Geissler <geissonator@yahoo.com>

There appears to be a hardware issue on system1 with the shared NCSI
network port, eth2. Our use cases don't require the use of this shared
network port by the BMC so just remove it from our device tree.

The symptom is that intermittently the entire BMC network stack will
stop working during a chassis power on or off. Any active ssh sessions
to the BMC will completely hang, and then come back after 5-60 seconds.

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
---
arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts | 10 ----------
1 file changed, 10 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
index a5252cec9903..3ccf932832f1 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
@@ -519,16 +519,6 @@ &mac2 {
use-ncsi;
};

-&mac3 {
- status = "okay";
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_rmii4_default>;
- clocks = <&syscon ASPEED_CLK_GATE_MAC4CLK>,
- <&syscon ASPEED_CLK_MAC4RCLK>;
- clock-names = "MACCLK", "RCLK";
- use-ncsi;
-};
-
&wdt1 {
aspeed,reset-type = "none";
aspeed,external-signal;
--
2.51.0