diff --git a/include/soc/rockchip/rk3588_grf.h b/include/soc/rockchip/rk3588_grf.h
index 02a7b2432d99..db0092fc66ad 100644
--- a/include/soc/rockchip/rk3588_grf.h
+++ b/include/soc/rockchip/rk3588_grf.h
@@ -19,4 +19,6 @@
 /* Whether the LPDDR5 is in 2:1 (= 0) or 4:1 (= 1) CKR a.k.a. DQS mode */
 #define RK3588_PMUGRF_OS_REG6_LP5_CKR			BIT(0)
 
+#define RK3588_SYSGRF_SOC_CON6			0x0318
+
 #endif /* __SOC_RK3588_GRF_H */