Hi Martin,
    Thanks for your reply.

On 2026/2/10 06:19, Martin Blumenstingl wrote:

On Thu, Feb 5, 2026 at 7:04 AM Xianwei Zhao via B4 Relay
[off-list ref]  wrote:
[...]

quoted

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a9-a311y3-by401.dts b/arch/arm64/boot/dts/amlogic/amlogic-a9-a311y3-by401.dts
new file mode 100644
index 000000000000..ad35a3292d49
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-a9-a311y3-by401.dts

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2026 Amlogic, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "amlogic-a9.dtsi"
+/ {
+       model = "Amlogic A311DY3 BY401 Development Board";
+       compatible = "amlogic,by401", "amlogic,a9";
+       interrupt-parent = <&gic>;

Shouldn't this go into amlogic-a9.dtsi (I can't see why different
boards may choose a different default interrupt-parent)?

Will do.