diff --git a/drivers/pmdomain/renesas/Kconfig b/drivers/pmdomain/renesas/Kconfig
index f2f52d3c29a0..df19b95c4655 100644
--- a/drivers/pmdomain/renesas/Kconfig
+++ b/drivers/pmdomain/renesas/Kconfig
@@ -37,6 +37,10 @@ config SYSC_R8A774A1
 	bool "System Controller support for R8A774A1 (RZ/G2M)" if COMPILE_TEST
 	select SYSC_RCAR
 
+config SYSC_R8A774A3
+	bool "System Controller support for R8A774A3 (RZ/G2M v3.0)" if COMPILE_TEST
+	select SYSC_RCAR
+
 config SYSC_R8A774B1
 	bool "System Controller support for R8A774B1 (RZ/G2N)" if COMPILE_TEST
 	select SYSC_RCAR
diff --git a/drivers/pmdomain/renesas/Makefile b/drivers/pmdomain/renesas/Makefile
index 17849aad37a5..8eda820478e4 100644
--- a/drivers/pmdomain/renesas/Makefile
+++ b/drivers/pmdomain/renesas/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_SYSC_R8A7743)	+= r8a7743-sysc.o
 obj-$(CONFIG_SYSC_R8A7745)	+= r8a7745-sysc.o
 obj-$(CONFIG_SYSC_R8A77470)	+= r8a77470-sysc.o
 obj-$(CONFIG_SYSC_R8A774A1)	+= r8a774a1-sysc.o
+obj-$(CONFIG_SYSC_R8A774A3)	+= r8a774a3-sysc.o
 obj-$(CONFIG_SYSC_R8A774B1)	+= r8a774b1-sysc.o
 obj-$(CONFIG_SYSC_R8A774C0)	+= r8a774c0-sysc.o
 obj-$(CONFIG_SYSC_R8A774E1)	+= r8a774e1-sysc.o
diff --git a/drivers/pmdomain/renesas/r8a774a3-sysc.c b/drivers/pmdomain/renesas/r8a774a3-sysc.c
new file mode 100644
index 000000000000..58c98700bd55
--- /dev/null
+++ b/drivers/pmdomain/renesas/r8a774a3-sysc.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas RZ/G2M v3.0 System Controller
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ *
+ * Based on Renesas R-Car M3-W System Controller
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#include <linux/kernel.h>
+
+#include <dt-bindings/power/renesas,r8a774a3-sysc.h>
+
+#include "rcar-sysc.h"
+
+static const struct rcar_sysc_area r8a774a3_areas[] __initconst = {
+	{ "always-on",     0, 0, R8A774A3_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
+	{ "ca57-scu",  0x1c0, 0, R8A774A3_PD_CA57_SCU, R8A774A3_PD_ALWAYS_ON,
+	  PD_SCU },
+	{ "ca57-cpu0",  0x80, 0, R8A774A3_PD_CA57_CPU0, R8A774A3_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "ca57-cpu1",  0x80, 1, R8A774A3_PD_CA57_CPU1, R8A774A3_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "ca53-scu",  0x140, 0, R8A774A3_PD_CA53_SCU, R8A774A3_PD_ALWAYS_ON,
+	  PD_SCU },
+	{ "ca53-cpu0", 0x200, 0, R8A774A3_PD_CA53_CPU0, R8A774A3_PD_CA53_SCU,
+	  PD_CPU_NOCR },
+	{ "ca53-cpu1", 0x200, 1, R8A774A3_PD_CA53_CPU1, R8A774A3_PD_CA53_SCU,
+	  PD_CPU_NOCR },
+	{ "ca53-cpu2", 0x200, 2, R8A774A3_PD_CA53_CPU2, R8A774A3_PD_CA53_SCU,
+	  PD_CPU_NOCR },
+	{ "ca53-cpu3", 0x200, 3, R8A774A3_PD_CA53_CPU3, R8A774A3_PD_CA53_SCU,
+	  PD_CPU_NOCR },
+	{ "a3vc",      0x380, 0, R8A774A3_PD_A3VC, R8A774A3_PD_ALWAYS_ON },
+	{ "a2vc1",     0x3c0, 1, R8A774A3_PD_A2VC1, R8A774A3_PD_A3VC },
+	{ "3dg-a",     0x100, 0, R8A774A3_PD_3DG_A, R8A774A3_PD_ALWAYS_ON },
+	{ "3dg-b",     0x100, 1, R8A774A3_PD_3DG_B, R8A774A3_PD_3DG_A },
+};
+
+const struct rcar_sysc_info r8a774a3_sysc_info __initconst = {
+	.areas = r8a774a3_areas,
+	.num_areas = ARRAY_SIZE(r8a774a3_areas),
+	.extmask_offs = 0x2f8,
+	.extmask_val = BIT(0),
+};
diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesas/rcar-sysc.c
index bd7bb9cbd9da..3c8a44c6d772 100644
--- a/drivers/pmdomain/renesas/rcar-sysc.c
+++ b/drivers/pmdomain/renesas/rcar-sysc.c
@@ -284,6 +284,9 @@ static const struct of_device_id rcar_sysc_matches[] __initconst = {
 #ifdef CONFIG_SYSC_R8A774A1
 	{ .compatible = "renesas,r8a774a1-sysc", .data = &r8a774a1_sysc_info },
 #endif
+#ifdef CONFIG_SYSC_R8A774A3
+	{ .compatible = "renesas,r8a774a3-sysc", .data = &r8a774a3_sysc_info },
+#endif
 #ifdef CONFIG_SYSC_R8A774B1
 	{ .compatible = "renesas,r8a774b1-sysc", .data = &r8a774b1_sysc_info },
 #endif
diff --git a/drivers/pmdomain/renesas/rcar-sysc.h b/drivers/pmdomain/renesas/rcar-sysc.h
index ef598ecc710a..b264e727883b 100644
--- a/drivers/pmdomain/renesas/rcar-sysc.h
+++ b/drivers/pmdomain/renesas/rcar-sysc.h
@@ -61,6 +61,7 @@ extern const struct rcar_sysc_info r8a7743_sysc_info;
 extern const struct rcar_sysc_info r8a7745_sysc_info;
 extern const struct rcar_sysc_info r8a77470_sysc_info;
 extern const struct rcar_sysc_info r8a774a1_sysc_info;
+extern const struct rcar_sysc_info r8a774a3_sysc_info;
 extern const struct rcar_sysc_info r8a774b1_sysc_info;
 extern const struct rcar_sysc_info r8a774c0_sysc_info;
 extern const struct rcar_sysc_info r8a774e1_sysc_info;