From 169665e2d0ad17bbe5aff029038a076022eb2bc3 Mon Sep 17 00:00:00 2001
From: Yixun Lan <dlan@kernel.org>
Date: Mon, 18 May 2026 20:58:16 +0000
Subject: [PATCH] dts: riscv: spacemit: k3: Fix I/O power settings

SpacemiT K3 SoC support dual-voltage I/O power domain, while initially
configure to 3.3v, and need to access register from APBC space to switch
to 1.8v domain.

Fix the GMAC0's I/O pins 1.8v switch failure that will result a broken
ethernet driver.

Fixes: d8944577496b ("riscv: dts: spacemit: k3: add pinctrl support")
Reported-by: Han Gao <gaohan@iscas.ac.cn>
Signed-off-by: Yixun Lan <dlan@kernel.org>
Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>
---
 arch/riscv/boot/dts/spacemit/k3.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index 815debd16409be..2b0bf9cd755bd2 100644
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -803,6 +803,7 @@
 			clocks = <&syscon_apbc CLK_APBC_AIB>,
 				 <&syscon_apbc CLK_APBC_AIB_BUS>;
 			clock-names = "func", "bus";
+			spacemit,apbc = <&syscon_apbc>;
 		};
 
 		uart10: serial@d401f000 {