arm64: dts: S32G3: Introduce device tree for S32G-VNP-RDB3

This commit adds device tree support for the NXP S32G3-based
S32G-VNP-RDB3 Board [1].

The S32G3 features an 8-core ARM Cortex-A53 based SoC developed by NXP.

The device tree files are derived from the official NXP downstream
Linux tree [2].

This addition encompasses a limited selection of peripherals that
are upstream-supported. Apart from the ARM System Modules
(GIC, Generic Timer, etc.), the following IPs have been validated:

    * UART: fsl-linflexuart
    * SDHC: fsl-imx-esdhc

Clock settings for the chip rely on ATF Firmware [3].
Pin control integration into the device tree is pending and currently
relies on Firmware/U-Boot settings [4].

These changes were validated using BSP39 Firmware/U-Boot from NXP [5].

The modifications enable booting the official Ubuntu 22.04 from NXP on
the RDB3 with default settings from the SD card and eMMC.

[1] https://www.nxp.com/design/design-center/designs/s32g3-vehicle-networking-reference-design:S32G-VNP-RDB3
[2] https://github.com/nxp-auto-linux/linux
[3] https://github.com/nxp-auto-linux/arm-trusted-firmware
[4] https://github.com/nxp-auto-linux/u-boot
[5] https://github.com/nxp-auto-linux/auto_yocto_bsp

Signed-off-by: Wadim Mueller <wafgo01@gmail.com>
Tested-by: Ghennadi Procopciuc <ghennadi.procopciuc@oss.nxp.com>
Reviewed-by: Ghennadi Procopciuc <ghennadi.procopciuc@oss.nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

1 files changed, 233 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/freescale/s32g3.dtsi b/arch/arm64/boot/dts/freescale/s32g3.dtsi
new file mode 100644
index 000000000000..c1b08992754b
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/s32g3.dtsi
@@ -0,0 +1,233 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2021-2023 NXP
+ *
+ * Authors: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
+ *          Ciprian Costea <ciprianmarian.costea@nxp.com>
+ *          Andra-Teodora Ilie <andra.ilie@nxp.com>
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "nxp,s32g3";
+	interrupt-parent = <&gic>;
+	#address-cells = <0x02>;
+	#size-cells = <0x02>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+
+				core1 {
+					cpu = <&cpu1>;
+				};
+
+				core2 {
+					cpu = <&cpu2>;
+				};
+
+				core3 {
+					cpu = <&cpu3>;
+				};
+			};
+
+			cluster1 {
+				core0 {
+					cpu = <&cpu4>;
+				};
+
+				core1 {
+					cpu = <&cpu5>;
+				};
+
+				core2 {
+					cpu = <&cpu6>;
+				};
+
+				core3 {
+					cpu = <&cpu7>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x1>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x2>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu4: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x100>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu5: cpu@101 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x101>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu6: cpu@102 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x102>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+
+		cpu7: cpu@103 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x103>;
+			enable-method = "psci";
+			clocks = <&dfs 0>;
+		};
+	};
+
+	firmware {
+		scmi: scmi {
+			compatible = "arm,scmi-smc";
+			shmem = <&scmi_shmem>;
+			arm,smc-id = <0xc20000fe>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			dfs: protocol@13 {
+				reg = <0x13>;
+				#clock-cells = <1>;
+			};
+
+			clks: protocol@14 {
+				reg = <0x14>;
+				#clock-cells = <1>;
+			};
+		};
+
+		psci: psci {
+			compatible = "arm,psci-1.0";
+			method = "smc";
+		};
+	};
+
+
+	pmu {
+		compatible = "arm,cortex-a53-pmu";
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	reserved-memory  {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		scmi_shmem: shm@d0000000 {
+			compatible = "arm,scmi-shmem";
+			reg = <0x0 0xd0000000 0x0 0x80>;
+			no-map;
+		};
+	};
+
+	soc@0 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0 0 0x80000000>;
+
+		uart0: serial@401c8000 {
+			compatible = "nxp,s32g3-linflexuart",
+				     "fsl,s32v234-linflexuart";
+			reg = <0x401c8000 0x3000>;
+			interrupts = <GIC_SPI 82 IRQ_TYPE_EDGE_RISING>;
+			status = "disabled";
+		};
+
+		uart1: serial@401cc000 {
+			compatible = "nxp,s32g3-linflexuart",
+				     "fsl,s32v234-linflexuart";
+			reg = <0x401cc000 0x3000>;
+			interrupts = <GIC_SPI 83 IRQ_TYPE_EDGE_RISING>;
+			status = "disabled";
+		};
+
+		uart2: serial@402bc000 {
+			compatible = "nxp,s32g3-linflexuart",
+				     "fsl,s32v234-linflexuart";
+			reg = <0x402bc000 0x3000>;
+			interrupts = <GIC_SPI 84 IRQ_TYPE_EDGE_RISING>;
+			status = "disabled";
+		};
+
+		usdhc0: mmc@402f0000 {
+			compatible = "nxp,s32g3-usdhc",
+				     "nxp,s32g2-usdhc";
+			reg = <0x402f0000 0x1000>;
+			interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clks 32>,
+				 <&clks 31>,
+				 <&clks 33>;
+			clock-names = "ipg", "ahb", "per";
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@50800000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			reg = <0x50800000 0x10000>,
+			      <0x50900000 0x200000>,
+			      <0x50400000 0x2000>,
+			      <0x50410000 0x2000>,
+			      <0x50420000 0x2000>;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* sec-phys */
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* phys */
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* virt */
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>, /* hyp-phys */
+			     <GIC_PPI 12 IRQ_TYPE_LEVEL_LOW>; /* hyp-virt */
+		arm,no-tick-in-suspend;
+	};
+};