arm64: dts: st: introduce stm32mp21 SoCs family

STM32MP21 family is composed of 3 SoCs defined as following:

-STM32MP211: common part composed of 1*Cortex-A35, common peripherals
like SDMMC, UART, SPI, I2C, parallel display, 1*ETH ...

-STM32MP213: STM32MP211 + a second ETH, CAN-FD.

-STM32MP215: STM32MP213 + Display and CSI2.

A second diversity layer exists for security features/ A35 frequency:
-STM32MP21xY, "Y" gives information:
 -Y = A means A35@1.2GHz + no cryp IP and no secure boot.
 -Y = C means A35@1.2GHz + cryp IP and secure boot.
 -Y = D means A35@1.5GHz + no cryp IP and no secure boot.
 -Y = F means A35@1.5GHz + cryp IP and secure boot.

Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20250225-b4-stm32mp2_new_dts-v2-8-1a628c1580c7@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

5 files changed, 162 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/st/stm32mp211.dtsi b/arch/arm64/boot/dts/st/stm32mp211.dtsi
new file mode 100644
index 000000000000..6dd1377f3e1d
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp211.dtsi
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
+ */
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a35";
+			reg = <0>;
+			device_type = "cpu";
+			enable-method = "psci";
+		};
+	};
+
+	arm-pmu {
+		compatible = "arm,cortex-a35-pmu";
+		interrupts = <GIC_SPI 368 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&cpu0>;
+		interrupt-parent = <&intc>;
+	};
+
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		status = "disabled";
+	};
+
+	ck_flexgen_08: clock-64000000 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <64000000>;
+	};
+
+	ck_flexgen_51: clock-200000000 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <200000000>;
+	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+
+		scmi: scmi {
+			compatible = "linaro,scmi-optee";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			linaro,optee-channel-id = <0>;
+
+			scmi_clk: protocol@14 {
+				reg = <0x14>;
+				#clock-cells = <1>;
+			};
+
+			scmi_reset: protocol@16 {
+				reg = <0x16>;
+				#reset-cells = <1>;
+			};
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&intc>;
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>;
+		arm,no-tick-in-suspend;
+	};
+
+	soc@0 {
+		compatible = "simple-bus";
+		ranges = <0x0 0x0 0x0 0x0 0x80000000>;
+		dma-ranges = <0x0 0x0 0x80000000 0x1 0x0>;
+		interrupt-parent = <&intc>;
+		#address-cells = <1>;
+		#size-cells = <2>;
+
+		rifsc: bus@42080000 {
+			compatible = "simple-bus";
+			reg = <0x42080000 0x0 0x1000>;
+			ranges;
+			dma-ranges;
+			#address-cells = <1>;
+			#size-cells = <2>;
+
+			usart2: serial@400e0000 {
+				compatible = "st,stm32h7-uart";
+				reg = <0x400e0000 0x0 0x400>;
+				interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ck_flexgen_08>;
+				status = "disabled";
+			};
+		};
+
+		syscfg: syscon@44230000 {
+			compatible = "st,stm32mp21-syscfg", "syscon";
+			reg = <0x44230000 0x0 0x10000>;
+		};
+
+		intc: interrupt-controller@4ac10000 {
+			compatible = "arm,cortex-a7-gic";
+			reg = <0x4ac10000 0x0 0x1000>,
+			      <0x4ac20000 0x0 0x2000>,
+			      <0x4ac40000 0x0 0x2000>,
+			      <0x4ac60000 0x0 0x2000>;
+			      #interrupt-cells = <3>;
+			      interrupt-controller;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/st/stm32mp213.dtsi b/arch/arm64/boot/dts/st/stm32mp213.dtsi
new file mode 100644
index 000000000000..fdd2dc432edd
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp213.dtsi
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
+ */
+#include "stm32mp211.dtsi"
+
+/ {
+};
diff --git a/arch/arm64/boot/dts/st/stm32mp215.dtsi b/arch/arm64/boot/dts/st/stm32mp215.dtsi
new file mode 100644
index 000000000000..a7df77f928c5
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp215.dtsi
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
+ */
+#include "stm32mp213.dtsi"
+
+/ {
+};
diff --git a/arch/arm64/boot/dts/st/stm32mp21xc.dtsi b/arch/arm64/boot/dts/st/stm32mp21xc.dtsi
new file mode 100644
index 000000000000..e33b00b424e1
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp21xc.dtsi
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
+ */
+
+/ {
+};
diff --git a/arch/arm64/boot/dts/st/stm32mp21xf.dtsi b/arch/arm64/boot/dts/st/stm32mp21xf.dtsi
new file mode 100644
index 000000000000..e33b00b424e1
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp21xf.dtsi
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
+ */
+
+/ {
+};