diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-pinctrl.dtsi b/arch/arm64/boot/dts/rockchip/rv1126b-pinctrl.dtsi
index 1af363f28558..0cce4f72799f 100644
--- a/arch/arm64/boot/dts/rockchip/rv1126b-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rv1126b-pinctrl.dtsi
@@ -2632,6 +2632,21 @@
  * This part is edited handly.
  */
 &pinctrl {
+	dsmc {
+		/omit-if-no-ref/
+		dsmc_csn_idle: dsmc-csn-idle {
+			rockchip,pins =
+				/* dsmc_csn0 */
+				<5 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>,
+				/* dsmc_csn1 */
+				<5 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>,
+				/* dsmc_csn2 */
+				<5 RK_PD1 RK_FUNC_GPIO &pcfg_pull_up>,
+				/* dsmc_csn3 */
+				<5 RK_PD0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	pdm {
 		/omit-if-no-ref/
 		pdmm0_clk0_idle: pdmm0-clk0-idle {