diff --git a/include/dt-bindings/suspend/rockchip-rk3308.h b/include/dt-bindings/suspend/rockchip-rk3308.h
index 5aa2e6b5b9f4..6f93b2124ef2 100644
--- a/include/dt-bindings/suspend/rockchip-rk3308.h
+++ b/include/dt-bindings/suspend/rockchip-rk3308.h
@@ -31,6 +31,7 @@
 #define RKPM_PMU_EXT_32K		BIT(6)
 #define RKPM_DDR_SREF_HARDWARE		BIT(7)
 #define RKPM_DDR_EXIT_SRPD_IDLE		BIT(8)
+#define RKPM_PDM_CLK_OFF		BIT(9)
 
 /* Reserved to be add... */