diff --git a/include/dt-bindings/power/r8a7744-sysc.h b/include/dt-bindings/power/r8a7744-sysc.h
new file mode 100644
index 000000000000..8b6529778f98
--- /dev/null
+++ b/include/dt-bindings/power/r8a7744-sysc.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2018 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_POWER_R8A7744_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A7744_SYSC_H__
+
+/*
+ * These power domain indices match the numbers of the interrupt bits
+ * representing the power areas in the various Interrupt Registers
+ * (e.g. SYSCISR, Interrupt Status Register)
+ *
+ * Note that RZ/G1N is identical to RZ/G2M w.r.t. power domains.
+ */
+
+#define R8A7744_PD_CA15_CPU0		 0
+#define R8A7744_PD_CA15_CPU1		 1
+#define R8A7744_PD_CA15_SCU		12
+#define R8A7744_PD_SGX			20
+
+/* Always-on power area */
+#define R8A7744_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_R8A7744_SYSC_H__ */