[PATCH v2 0/9] Add support for Renesas RZ/G2M v3.0 (a.k.a R8A774A3) SoC

[PATCH v2 0/9] Add support for Renesas RZ/G2M v3.0 (a.k.a R8A774A3) SoC

[Ayman Chaudhry]

Hi All,

This patch series adds initial support for the Renesas RZ/G2M v3.0
(a.k.a. R8A774A3) SoC, which is similar to the Renesas RZ/G2M v1.3
(a.k.a. R8A774A1) SoC but does have hardware differences, for example
the System Controller lacks the A2VC0 power area, and CPG lacks modules
like FCPCI.

v1->v2:
- Dropped patch 01/10 ("soc: renesas: Identify RZ/G2M v3.0 SoC") as it
  has already been mainlined.
- Dropped patch 05/10 ("soc: renesas: rcar-rst: Add support for RZ/G2M
  v3.0") as it has already been mainlined.
- PATCH 01/09: New patch.
- Renamed SYSC and CPG dt-bindings to include vendor prefix and updated
  all references accordingly.
- Added vendor prefix to include guards for SYSC and CPG dt-bindings.
- Updated commit message for patch #2.
- Added space before closing brace for `ca57-cpu1` area.
- Replaced underscores of node names with hyphens in DTSI.
- Updated patch #7 to not use odd sizes for the sizes of registers and
  also removed the leading 0 for the system-controller node.
- Added soc: label to soc node.
- Dropped bootargs from chosen.
- Corrected indentation for patch #9.
- Updated licensing to use "GPL-2.0-only OR BSD-2-Clause".
- Added Reviewed-by tag to patches #2-7.

v1: https://lore.kernel.org/all/20260821150408.73829-1-ayman.chaudhry.kc@renesas.com/

Thanks,
Ayman

Ayman Chaudhry (9):
  dt-bindings: power: renesas,rcar-sysc: Document vendor-prefixed header
    paths
  dt-bindings: power: Add r8a774a3 SYSC power domain definitions
  pmdomain: renesas: rcar-sys: Add r8a774a3 support
  soc: renesas: Enable SYSC driver for r8a774a3
  dt-bindings: clock: Add r8a774a3 CPG Core Clock definitions
  clk: renesas: Add support for RZ/G2M v3.0
  arm64: dts: renesas: Add initial SoC DTSI for RZ/G2M v3.0
  arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support
  arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC sub board support

 .../bindings/power/renesas,rcar-sysc.yaml     |   7 +-
 arch/arm64/boot/dts/renesas/Makefile          |   3 +
 .../dts/renesas/r8a774a3-hihope-rzg2m-ex.dts  |  14 +
 .../dts/renesas/r8a774a3-hihope-rzg2m.dts     |  49 +++
 arch/arm64/boot/dts/renesas/r8a774a3.dtsi     | 302 ++++++++++++++++++
 drivers/clk/renesas/Kconfig                   |   5 +
 drivers/clk/renesas/Makefile                  |   1 +
 drivers/clk/renesas/r8a774a3-cpg-mssr.c       | 168 ++++++++++
 drivers/clk/renesas/renesas-cpg-mssr.c        |   6 +
 drivers/clk/renesas/renesas-cpg-mssr.h        |   1 +
 drivers/pmdomain/renesas/Kconfig              |   4 +
 drivers/pmdomain/renesas/Makefile             |   1 +
 drivers/pmdomain/renesas/r8a774a3-sysc.c      |  45 +++
 drivers/pmdomain/renesas/rcar-sysc.c          |   3 +
 drivers/pmdomain/renesas/rcar-sysc.h          |   1 +
 drivers/soc/renesas/Kconfig                   |   1 +
 .../clock/renesas,r8a774a3-cpg-mssr.h         |  59 ++++
 .../dt-bindings/power/renesas,r8a774a3-sysc.h |  30 ++
 18 files changed, 698 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3.dtsi
 create mode 100644 drivers/clk/renesas/r8a774a3-cpg-mssr.c
 create mode 100644 drivers/pmdomain/renesas/r8a774a3-sysc.c
 create mode 100644 include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h
 create mode 100644 include/dt-bindings/power/renesas,r8a774a3-sysc.h

-- 
2.34.1

[PATCH v2 1/9] dt-bindings: power: renesas,rcar-sysc: Document vendor-prefixed header paths

[Ayman Chaudhry]

Update the top-level description to also explicitly mention
vendor-prefixed header paths and what the asterisk wildcard represents.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
---
v1->v2:
- New patch

 .../devicetree/bindings/power/renesas,rcar-sysc.yaml       | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.yaml b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.yaml
index b67aa170b2c1..68b4696d7c59 100644
--- a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.yaml
+++ b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.yaml
@@ -13,8 +13,11 @@ maintainers:
 description: |
   The R-Car (RZ/G) System Controller provides power management for the CPU
   cores and various coprocessors.
-  The power domain IDs for consumers are defined in header files:
-  include/dt-bindings/power/r8*-sysc.h
+  The power domain IDs for consumers are defined in the below header files
+  (where the asterisk serves as a wildcard matching the specific SoC
+  identifier):
+  include/dt-bindings/power/r8*-sysc.h or
+  include/dt-bindings/power/renesas,r8*-sysc.h
 
 properties:
   compatible:
-- 
2.34.1

[PATCH v2 2/9] dt-bindings: power: Add r8a774a3 SYSC power domain definitions

[Ayman Chaudhry]

Add power domain indices for the Renesas RZ/G2M v3.0 (a.k.a. R8A774A3)
SoC.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v1->v2:
- Updated commit message
- Renamed file to include vendor prefix
- Added vendor prefix to include macros
- Added Reviewed-by tag

 .../dt-bindings/power/renesas,r8a774a3-sysc.h | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 include/dt-bindings/power/renesas,r8a774a3-sysc.h

diff --git a/include/dt-bindings/power/renesas,r8a774a3-sysc.h b/include/dt-bindings/power/renesas,r8a774a3-sysc.h
new file mode 100644
index 000000000000..ddee6812e9a4
--- /dev/null
+++ b/include/dt-bindings/power/renesas,r8a774a3-sysc.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_POWER_RENESAS_R8A774A3_SYSC_H__
+#define __DT_BINDINGS_POWER_RENESAS_R8A774A3_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)
+ */
+
+#define R8A774A3_PD_CA57_CPU0		 0
+#define R8A774A3_PD_CA57_CPU1		 1
+#define R8A774A3_PD_CA53_CPU0		 5
+#define R8A774A3_PD_CA53_CPU1		 6
+#define R8A774A3_PD_CA53_CPU2		 7
+#define R8A774A3_PD_CA53_CPU3		 8
+#define R8A774A3_PD_CA57_SCU		12
+#define R8A774A3_PD_A3VC		14
+#define R8A774A3_PD_3DG_A		17
+#define R8A774A3_PD_3DG_B		18
+#define R8A774A3_PD_CA53_SCU		21
+#define R8A774A3_PD_A2VC1		26
+
+/* Always-on power area */
+#define R8A774A3_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_RENESAS_R8A774A3_SYSC_H__ */
-- 
2.34.1

[PATCH v2 5/9] dt-bindings: clock: Add r8a774a3 CPG Core Clock definitions

[Ayman Chaudhry]

Add all the Renesas RZ/G2M v3.0 (a.k.a. R8A774A3) SoC Clock Pulse
Generator Core Clock Outputs, as listed in Table 11.3 ("List of Clocks
[RZ/G2M V1.3, RZ/G2M V3.0]") of the RZ/G2 Hardware User's Manual.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v1->v2:
- Renamed file to include vendor prefix
- Added vendor prefix to include macros
- Added Reviewed-by tag

 .../clock/renesas,r8a774a3-cpg-mssr.h         | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h

diff --git a/include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h b/include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h
new file mode 100644
index 000000000000..09121a30e066
--- /dev/null
+++ b/include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_CLOCK_RENESAS_R8A774A3_CPG_MSSR_H__
+#define __DT_BINDINGS_CLOCK_RENESAS_R8A774A3_CPG_MSSR_H__
+
+#include <dt-bindings/clock/renesas-cpg-mssr.h>
+
+/* r8a774a3 CPG Core Clocks */
+#define R8A774A3_CLK_Z			0
+#define R8A774A3_CLK_Z2			1
+#define R8A774A3_CLK_ZG			2
+#define R8A774A3_CLK_ZTR		3
+#define R8A774A3_CLK_ZTRD2		4
+#define R8A774A3_CLK_ZT			5
+#define R8A774A3_CLK_ZX			6
+#define R8A774A3_CLK_S0D1		7
+#define R8A774A3_CLK_S0D2		8
+#define R8A774A3_CLK_S0D3		9
+#define R8A774A3_CLK_S0D4		10
+#define R8A774A3_CLK_S0D6		11
+#define R8A774A3_CLK_S0D8		12
+#define R8A774A3_CLK_S0D12		13
+#define R8A774A3_CLK_S1D2		14
+#define R8A774A3_CLK_S1D4		15
+#define R8A774A3_CLK_S2D1		16
+#define R8A774A3_CLK_S2D2		17
+#define R8A774A3_CLK_S2D4		18
+#define R8A774A3_CLK_S3D1		19
+#define R8A774A3_CLK_S3D2		20
+#define R8A774A3_CLK_S3D4		21
+#define R8A774A3_CLK_LB			22
+#define R8A774A3_CLK_CL			23
+#define R8A774A3_CLK_ZB3		24
+#define R8A774A3_CLK_ZB3D2		25
+#define R8A774A3_CLK_ZB3D4		26
+#define R8A774A3_CLK_CR			27
+#define R8A774A3_CLK_CRD2		28
+#define R8A774A3_CLK_SD0H		29
+#define R8A774A3_CLK_SD0		30
+#define R8A774A3_CLK_SD1H		31
+#define R8A774A3_CLK_SD1		32
+#define R8A774A3_CLK_SD2H		33
+#define R8A774A3_CLK_SD2		34
+#define R8A774A3_CLK_SD3H		35
+#define R8A774A3_CLK_SD3		36
+#define R8A774A3_CLK_RPC		37
+#define R8A774A3_CLK_RPCD2		38
+#define R8A774A3_CLK_MSO		39
+#define R8A774A3_CLK_CANFD		40
+#define R8A774A3_CLK_HDMI		41
+#define R8A774A3_CLK_CSI0		42
+#define R8A774A3_CLK_CP			43
+#define R8A774A3_CLK_CPEX		44
+#define R8A774A3_CLK_R			45
+#define R8A774A3_CLK_OSC		46
+
+#endif /* __DT_BINDINGS_CLOCK_RENESAS_R8A774A3_CPG_MSSR_H__ */
-- 
2.34.1

[PATCH v2 7/9] arm64: dts: renesas: Add initial SoC DTSI for RZ/G2M v3.0

[Ayman Chaudhry]

Add initial Device Tree Source Include (DTSI) file for the Renesas
RZ/G2M v3.0 (a.k.a. R8A774A3) SoC with basic support.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v1->v2:
- Updated include path to CPG, SYSC dt-bindings
- Replaced underscores of node names with hyphens
- Updated licensing to "GPL-2.0-only OR BSD-2-Clause"
- Added soc: label to soc node
- Updated register sizes for clock-controller and reset-controller nodes
  to not use odd sizes
- Updated register size for system-controller node to not have a leading
  0 in the register size
- Added Reviewed-by tag

 arch/arm64/boot/dts/renesas/r8a774a3.dtsi | 302 ++++++++++++++++++++++
 1 file changed, 302 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3.dtsi

diff --git a/arch/arm64/boot/dts/renesas/r8a774a3.dtsi b/arch/arm64/boot/dts/renesas/r8a774a3.dtsi
new file mode 100644
index 000000000000..e8adafbf0104
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774a3.dtsi
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+/*
+ * Device Tree Source for the r8a774a3 SoC
+ *
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h>
+#include <dt-bindings/power/renesas,r8a774a3-sysc.h>
+
+/ {
+	compatible = "renesas,r8a774a3";
+	#address-cells = <2>;
+	#size-cells = <2>;
+	interrupt-parent = <&gic>;
+
+	cluster0_opp: opp-table-0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-500000000 {
+			opp-hz = /bits/ 64 <500000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1500000000 {
+			opp-hz = /bits/ 64 <1500000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+			opp-suspend;
+		};
+	};
+
+	cluster1_opp: opp-table-1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&a57_0>;
+				};
+				core1 {
+					cpu = <&a57_1>;
+				};
+			};
+
+			cluster1 {
+				core0 {
+					cpu = <&a53_0>;
+				};
+				core1 {
+					cpu = <&a53_1>;
+				};
+				core2 {
+					cpu = <&a53_2>;
+				};
+				core3 {
+					cpu = <&a53_3>;
+				};
+			};
+		};
+
+		a57_0: cpu@0 {
+			compatible = "arm,cortex-a57";
+			reg = <0x0>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA57_CPU0>;
+			next-level-cache = <&L2_CA57>;
+			enable-method = "psci";
+			dynamic-power-coefficient = <854>;
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
+			capacity-dmips-mhz = <1024>;
+		};
+
+		a57_1: cpu@1 {
+			compatible = "arm,cortex-a57";
+			reg = <0x1>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA57_CPU1>;
+			next-level-cache = <&L2_CA57>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
+			capacity-dmips-mhz = <1024>;
+		};
+
+		a53_0: cpu@100 {
+			compatible = "arm,cortex-a53";
+			reg = <0x100>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA53_CPU0>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			dynamic-power-coefficient = <277>;
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
+			capacity-dmips-mhz = <560>;
+		};
+
+		a53_1: cpu@101 {
+			compatible = "arm,cortex-a53";
+			reg = <0x101>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA53_CPU1>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
+			capacity-dmips-mhz = <560>;
+		};
+
+		a53_2: cpu@102 {
+			compatible = "arm,cortex-a53";
+			reg = <0x102>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA53_CPU2>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
+			capacity-dmips-mhz = <560>;
+		};
+
+		a53_3: cpu@103 {
+			compatible = "arm,cortex-a53";
+			reg = <0x103>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A774A3_PD_CA53_CPU3>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R8A774A3_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
+			capacity-dmips-mhz = <560>;
+		};
+
+		L2_CA57: cache-controller-0 {
+			compatible = "cache";
+			power-domains = <&sysc R8A774A3_PD_CA57_SCU>;
+			cache-unified;
+			cache-level = <2>;
+		};
+
+		L2_CA53: cache-controller-1 {
+			compatible = "cache";
+			power-domains = <&sysc R8A774A3_PD_CA53_SCU>;
+			cache-unified;
+			cache-level = <2>;
+		};
+	};
+
+	extal_clk: extal {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		/* This value must be overridden by the board */
+		clock-frequency = <0>;
+		bootph-all;
+	};
+
+	extalr_clk: extalr {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		/* This value must be overridden by the board */
+		clock-frequency = <0>;
+		bootph-all;
+	};
+
+	pmu-a53 {
+		compatible = "arm,cortex-a53-pmu";
+		interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&a53_0>, <&a53_1>, <&a53_2>, <&a53_3>;
+	};
+
+	pmu-a57 {
+		compatible = "arm,cortex-a57-pmu";
+		interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+			    <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&a57_0>, <&a57_1>;
+	};
+
+	psci {
+		compatible = "arm,psci-1.0", "arm,psci-0.2";
+		method = "smc";
+	};
+
+	/* External SCIF clock - to be overridden by boards that provide it */
+	scif_clk: scif {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		bootph-all;
+
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		cpg: clock-controller@e6150000 {
+			compatible = "renesas,r8a774a3-cpg-mssr";
+			reg = <0 0xe6150000 0 0x1000>;
+			clocks = <&extal_clk>, <&extalr_clk>;
+			clock-names = "extal", "extalr";
+			#clock-cells = <2>;
+			#power-domain-cells = <0>;
+			#reset-cells = <1>;
+			bootph-all;
+		};
+
+		rst: reset-controller@e6160000 {
+			compatible = "renesas,r8a774a3-rst";
+			reg = <0 0xe6160000 0 0x200>;
+			bootph-all;
+		};
+
+		sysc: system-controller@e6180000 {
+			compatible = "renesas,r8a774a3-sysc";
+			reg = <0 0xe6180000 0 0x400>;
+			#power-domain-cells = <1>;
+		};
+
+		scif2: serial@e6e88000 {
+			compatible = "renesas,scif-r8a774a3",
+				     "renesas,rcar-gen3-scif", "renesas,scif";
+			reg = <0 0xe6e88000 0 0x40>;
+			interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 310>,
+				 <&cpg CPG_CORE R8A774A3_CLK_S3D1>,
+				 <&scif_clk>;
+			clock-names = "fck", "brg_int", "scif_clk";
+			power-domains = <&sysc R8A774A3_PD_ALWAYS_ON>;
+			resets = <&cpg 310>;
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@f1010000 {
+			compatible = "arm,gic-400";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x0 0xf1010000 0 0x1000>,
+			      <0x0 0xf1020000 0 0x20000>,
+			      <0x0 0xf1040000 0 0x20000>,
+			      <0x0 0xf1060000 0 0x20000>;
+			interrupts = <GIC_PPI 9
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
+			clocks = <&cpg CPG_MOD 408>;
+			clock-names = "clk";
+			power-domains = <&sysc R8A774A3_PD_ALWAYS_ON>;
+			resets = <&cpg 408>;
+		};
+
+		prr: chipid@fff00044 {
+			compatible = "renesas,prr";
+			reg = <0 0xfff00044 0 4>;
+			bootph-all;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-names = "sec-phys", "phys", "virt", "hyp-phys";
+	};
+};
-- 
2.34.1

[PATCH v2 8/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support

[Ayman Chaudhry]

Add support for the HiHope RZ/G2M v3.0 (a.k.a. R8A774A3) SoC main
board.

The RZ/G2M v3.0 SoC main board is similar to the RZ/G2M v1.3 SoC main
board, so there are already DTSI files available in the kernel. These
DTSI files will be included once additional support (e.g. I2C, GPIO
and sound) is added for the RZ/G2M v3.0 SoC.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
---
v1->v2:
- Dropped bootargs from chosen.
- Updated licensing to "GPL-2.0-only OR BSD-2-Clause"

 arch/arm64/boot/dts/renesas/Makefile          |  2 +
 .../dts/renesas/r8a774a3-hihope-rzg2m.dts     | 49 +++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index b742baf509a1..9817f3ada6f9 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -8,6 +8,8 @@ dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex-idk-1110wr.dtb
 
+dtb-$(CONFIG_ARCH_R8A774A3) += r8a774a3-hihope-rzg2m.dtb
+
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-beacon-rzg2n-kit.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n-ex.dtb
diff --git a/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
new file mode 100644
index 000000000000..cd46af2a924a
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+/*
+ * Device Tree Source for the HiHope RZ/G2M v3.0 SoC main board
+ *
+ *Copyright (C) 2026 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a774a3.dtsi"
+
+/ {
+	model = "HopeRun HiHope RZ/G2M v3.0 main board based on r8a774a3";
+	compatible = "hoperun,hihope-rzg2m", "renesas,r8a774a3";
+
+	memory@48000000 {
+		device_type = "memory";
+		/* First 128MiB is reserved for secure area */
+		reg = <0x0 0x48000000 0x0 0x78000000>;
+	};
+
+	memory@600000000 {
+		device_type = "memory";
+		reg = <0x6 0x00000000 0x0 0x80000000>;
+	};
+
+	aliases {
+		serial0 = &scif2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&extal_clk {
+	clock-frequency = <16666666>;
+};
+
+&extalr_clk {
+	clock-frequency = <32768>;
+};
+
+&scif2 {
+	status = "okay";
+};
+
+&scif_clk {
+	clock-frequency = <14745600>;
+};
-- 
2.34.1

[PATCH v2 9/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC sub board support

[Ayman Chaudhry]

The HiHope RZ/G2M sub board sits below the HiHope RZ/G2M v3.0
(a.k.a. R8A774A3) SoC main board.

The RZ/G2M v3.0 SoC sub board is similar to the RZ/G2M v1.3 SoC sub
board, so there are already DTSI files available in the kernel. These
DTSI files will be included once additional support (e.g. CAN, PCIe
and ethernet) is added for the RZ/G2M v3.0 SoC.

Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
---
v1->v2:
- Corrected indentation
- Updated licensing to "GPL-2.0-only OR BSD-2-Clause"

 arch/arm64/boot/dts/renesas/Makefile               |  1 +
 .../boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts  | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 9817f3ada6f9..10a138216221 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -9,6 +9,7 @@ dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex-idk-1110wr.dtb
 
 dtb-$(CONFIG_ARCH_R8A774A3) += r8a774a3-hihope-rzg2m.dtb
+dtb-$(CONFIG_ARCH_R8A774A3) += r8a774a3-hihope-rzg2m-ex.dtb
 
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-beacon-rzg2n-kit.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n.dtb
diff --git a/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
new file mode 100644
index 000000000000..d346a4009ec8
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+/*
+ * Device Tree Source for the HiHope RZ/G2M v3.0 SoC sub board
+ *
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ */
+
+#include "r8a774a3-hihope-rzg2m.dts"
+
+/ {
+	model = "HopeRun HiHope RZ/G2M v3.0 with sub board";
+	compatible = "hoperun,hihope-rzg2-ex", "hoperun,hihope-rzg2m",
+		     "renesas,r8a774a3";
+};
-- 
2.34.1

Re: [PATCH v2 8/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] dts: missing space in copyright comment header
--

commit fa0e8a7a8383bb4b7747ee29d3b565433c1fa5e6
Author: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>

arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support

Add support for the HiHope RZ/G2M v3.0 (a.k.a. R8A774A3) SoC main board.

> diff --git a/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
> new file mode 100644
> index 0000000000000..cd46af2a924a7
> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
> @@ -0,0 +1,49 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +/*
> + * Device Tree Source for the HiHope RZ/G2M v3.0 SoC main board
> + *
> + *Copyright (C) 2026 Renesas Electronics Corp.
      ^^^^^^^^^

[Severity: Low]
This isn't a bug, but there is a missing space after the asterisk in the
copyright comment header.

> + */
> +
> +/dts-v1/;
> +#include "r8a774a3.dtsi"

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260921134432.50338-1-ayman.chaudhry.kc@renesas.com?part=8

Re: [PATCH v2 1/9] dt-bindings: power: renesas,rcar-sysc: Document vendor-prefixed header paths

[Geert Uytterhoeven]

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> Update the top-level description to also explicitly mention
> vendor-prefixed header paths and what the asterisk wildcard represents.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 2/9] dt-bindings: power: Add r8a774a3 SYSC power domain definitions

[Geert Uytterhoeven]

CC Ulf

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> Add power domain indices for the Renesas RZ/G2M v3.0 (a.k.a. R8A774A3)
> SoC.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> v1->v2:
> - Updated commit message
> - Renamed file to include vendor prefix
> - Added vendor prefix to include macros
> - Added Reviewed-by tag

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in a branch shared by driver and DT source code.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 5/9] dt-bindings: clock: Add r8a774a3 CPG Core Clock definitions

[Geert Uytterhoeven]

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> Add all the Renesas RZ/G2M v3.0 (a.k.a. R8A774A3) SoC Clock Pulse
> Generator Core Clock Outputs, as listed in Table 11.3 ("List of Clocks
> [RZ/G2M V1.3, RZ/G2M V3.0]") of the RZ/G2 Hardware User's Manual.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> v1->v2:
> - Renamed file to include vendor prefix
> - Added vendor prefix to include macros
> - Added Reviewed-by tag

Thanks, will queue in a branch shared by driver and DT source code.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 7/9] arm64: dts: renesas: Add initial SoC DTSI for RZ/G2M v3.0

[Geert Uytterhoeven]

Hi Ayman,

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> Add initial Device Tree Source Include (DTSI) file for the Renesas
> RZ/G2M v3.0 (a.k.a. R8A774A3) SoC with basic support.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> v1->v2:
> - Updated include path to CPG, SYSC dt-bindings
> - Replaced underscores of node names with hyphens
> - Updated licensing to "GPL-2.0-only OR BSD-2-Clause"
> - Added soc: label to soc node
> - Updated register sizes for clock-controller and reset-controller nodes
>   to not use odd sizes
> - Updated register size for system-controller node to not have a leading
>   0 in the register size
> - Added Reviewed-by tag

Thanks for the update!

> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a774a3.dtsi
> @@ -0,0 +1,302 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +/*
> + * Device Tree Source for the r8a774a3 SoC
> + *
> + * Copyright (C) 2026 Renesas Electronics Corp.
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h>
> +#include <dt-bindings/power/renesas,r8a774a3-sysc.h>

Will sort these while queuing in renesas-devel for v7.4.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 8/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support

[Geert Uytterhoeven]

Hi Ayman,

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> Add support for the HiHope RZ/G2M v3.0 (a.k.a. R8A774A3) SoC main
> board.
>
> The RZ/G2M v3.0 SoC main board is similar to the RZ/G2M v1.3 SoC main
> board, so there are already DTSI files available in the kernel. These
> DTSI files will be included once additional support (e.g. I2C, GPIO
> and sound) is added for the RZ/G2M v3.0 SoC.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
> ---
> v1->v2:
> - Dropped bootargs from chosen.
> - Updated licensing to "GPL-2.0-only OR BSD-2-Clause"

Thanks for the update!

> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
> @@ -0,0 +1,49 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +/*
> + * Device Tree Source for the HiHope RZ/G2M v3.0 SoC main board
> + *
> + *Copyright (C) 2026 Renesas Electronics Corp.

Missing space, as pointed out by Sashiko.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v7.4 with the above fixed.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 0/9] Add support for Renesas RZ/G2M v3.0 (a.k.a R8A774A3) SoC

[Ulf Hansson]

On Mon, Sep 21, 2026 at 3:45 PM Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
>
> Hi All,
>
> This patch series adds initial support for the Renesas RZ/G2M v3.0
> (a.k.a. R8A774A3) SoC, which is similar to the Renesas RZ/G2M v1.3
> (a.k.a. R8A774A1) SoC but does have hardware differences, for example
> the System Controller lacks the A2VC0 power area, and CPG lacks modules
> like FCPCI.
>
> v1->v2:
> - Dropped patch 01/10 ("soc: renesas: Identify RZ/G2M v3.0 SoC") as it
>   has already been mainlined.
> - Dropped patch 05/10 ("soc: renesas: rcar-rst: Add support for RZ/G2M
>   v3.0") as it has already been mainlined.
> - PATCH 01/09: New patch.
> - Renamed SYSC and CPG dt-bindings to include vendor prefix and updated
>   all references accordingly.
> - Added vendor prefix to include guards for SYSC and CPG dt-bindings.
> - Updated commit message for patch #2.
> - Added space before closing brace for `ca57-cpu1` area.
> - Replaced underscores of node names with hyphens in DTSI.
> - Updated patch #7 to not use odd sizes for the sizes of registers and
>   also removed the leading 0 for the system-controller node.
> - Added soc: label to soc node.
> - Dropped bootargs from chosen.
> - Corrected indentation for patch #9.
> - Updated licensing to use "GPL-2.0-only OR BSD-2-Clause".
> - Added Reviewed-by tag to patches #2-7.
>
> v1: https://lore.kernel.org/all/20260821150408.73829-1-ayman.chaudhry.kc@renesas.com/
>
> Thanks,
> Ayman
>
> Ayman Chaudhry (9):
>   dt-bindings: power: renesas,rcar-sysc: Document vendor-prefixed header
>     paths
>   dt-bindings: power: Add r8a774a3 SYSC power domain definitions
>   pmdomain: renesas: rcar-sys: Add r8a774a3 support
>   soc: renesas: Enable SYSC driver for r8a774a3
>   dt-bindings: clock: Add r8a774a3 CPG Core Clock definitions
>   clk: renesas: Add support for RZ/G2M v3.0
>   arm64: dts: renesas: Add initial SoC DTSI for RZ/G2M v3.0
>   arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC main board support
>   arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC sub board support
>
>  .../bindings/power/renesas,rcar-sysc.yaml     |   7 +-
>  arch/arm64/boot/dts/renesas/Makefile          |   3 +
>  .../dts/renesas/r8a774a3-hihope-rzg2m-ex.dts  |  14 +
>  .../dts/renesas/r8a774a3-hihope-rzg2m.dts     |  49 +++
>  arch/arm64/boot/dts/renesas/r8a774a3.dtsi     | 302 ++++++++++++++++++
>  drivers/clk/renesas/Kconfig                   |   5 +
>  drivers/clk/renesas/Makefile                  |   1 +
>  drivers/clk/renesas/r8a774a3-cpg-mssr.c       | 168 ++++++++++
>  drivers/clk/renesas/renesas-cpg-mssr.c        |   6 +
>  drivers/clk/renesas/renesas-cpg-mssr.h        |   1 +
>  drivers/pmdomain/renesas/Kconfig              |   4 +
>  drivers/pmdomain/renesas/Makefile             |   1 +
>  drivers/pmdomain/renesas/r8a774a3-sysc.c      |  45 +++
>  drivers/pmdomain/renesas/rcar-sysc.c          |   3 +
>  drivers/pmdomain/renesas/rcar-sysc.h          |   1 +
>  drivers/soc/renesas/Kconfig                   |   1 +
>  .../clock/renesas,r8a774a3-cpg-mssr.h         |  59 ++++
>  .../dt-bindings/power/renesas,r8a774a3-sysc.h |  30 ++
>  18 files changed, 698 insertions(+), 2 deletions(-)
>  create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m-ex.dts
>  create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3-hihope-rzg2m.dts
>  create mode 100644 arch/arm64/boot/dts/renesas/r8a774a3.dtsi
>  create mode 100644 drivers/clk/renesas/r8a774a3-cpg-mssr.c
>  create mode 100644 drivers/pmdomain/renesas/r8a774a3-sysc.c
>  create mode 100644 include/dt-bindings/clock/renesas,r8a774a3-cpg-mssr.h
>  create mode 100644 include/dt-bindings/power/renesas,r8a774a3-sysc.h
>
> --
> 2.34.1
>

Patch 1 -> 3 applied for next, thanks!

Note that patch1 and patch2 are also available on the immutable dt branch.

Kind regards
Uffe

Re: [PATCH v2 9/9] arm64: dts: renesas: Add HiHope RZ/G2M v3.0 SoC sub board support

[Geert Uytterhoeven]

On Mon, 21 Sept 2026 at 15:45, Ayman Chaudhry
<ayman.chaudhry.kc@renesas.com> wrote:
> The HiHope RZ/G2M sub board sits below the HiHope RZ/G2M v3.0
> (a.k.a. R8A774A3) SoC main board.
>
> The RZ/G2M v3.0 SoC sub board is similar to the RZ/G2M v1.3 SoC sub
> board, so there are already DTSI files available in the kernel. These
> DTSI files will be included once additional support (e.g. CAN, PCIe
> and ethernet) is added for the RZ/G2M v3.0 SoC.
>
> Signed-off-by: Ayman Chaudhry <ayman.chaudhry.kc@renesas.com>
> ---
> v1->v2:
> - Corrected indentation
> - Updated licensing to "GPL-2.0-only OR BSD-2-Clause"

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v7.4.

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds