arm64: dts: fsd: Add initial device tree support

Add initial device tree support for "Full Self-Driving" (FSD) SoC
This SoC contain three clusters of four cortex-a72 CPUs and various
peripheral IPs.

Cc: linux-fsd@tesla.com
Signed-off-by: Arjun K V <arjun.kv@samsung.com>
Signed-off-by: Aswani Reddy <aswani.reddy@samsung.com>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Sriranjani P <sriranjani.p@samsung.com>
Signed-off-by: Chandrasekar R <rcsekar@samsung.com>
Signed-off-by: Shashank Prashar <s.prashar@samsung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>

MAINTAINERS

@@ -2726,6 +2726,14 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/media/tegra-cec.txt
 F:	drivers/media/cec/platform/tegra/
 
+ARM/TESLA FSD SoC SUPPORT
+M:	Alim Akhtar <alim.akhtar@samsung.com>
+M:	linux-fsd@tesla.com
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L:	linux-samsung-soc@vger.kernel.org
+S:	Maintained
+F:	arch/arm64/boot/dts/tesla*
+
 ARM/TETON BGA MACHINE SUPPORT
 M:	"Mark F. Brown" <mark.brown314@gmail.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

arch/arm64/Kconfig.platforms

@@ -267,6 +267,12 @@ config ARCH_TEGRA
 	help
 	  This enables support for the NVIDIA Tegra SoC family.
 
+config ARCH_TESLA_FSD
+	bool "ARMv8 based Tesla platform"
+	select ARCH_EXYNOS
+	help
+	  Support for ARMv8 based Tesla platforms.
+
 config ARCH_SPRD
 	bool "Spreadtrum SoC platform"
 	help

arch/arm64/boot/dts/Makefile

@@ -27,6 +27,7 @@ subdir-y += rockchip
 subdir-y += socionext
 subdir-y += sprd
 subdir-y += synaptics
+subdir-y += tesla
 subdir-y += ti
 subdir-y += toshiba
 subdir-y += xilinx

arch/arm64/boot/dts/tesla/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_TESLA_FSD) += \
+	fsd.dtb

arch/arm64/boot/dts/tesla/fsd.dts

@@ -0,0 +1,140 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Tesla FSD board device tree source
+ *
+ * Copyright (c) 2017-2021 Samsung Electronics Co., Ltd.
+ *		https://www.samsung.com
+ * Copyright (c) 2017-2021 Tesla, Inc.
+ *		https://www.tesla.com
+ */
+
+/dts-v1/;
+#include "fsd.dtsi"
+
+/ {
+	model = "Tesla Full Self-Driving (FSD) SoC";
+	compatible = "tesla,fsd";
+
+	aliases {
+		serial0 = &serial_0;
+		serial1 = &serial_1;
+	};
+
+	chosen {
+		stdout-path = &serial_0;
+		linux,initrd-start = <0xE0000000>;
+		linux,initrd-end = <0xE4F00000>;
+		bootargs = "console=ttySAC0,115200n8
+			earlycon=exynos4210,0x14180000 root=/dev/ram0
+			init=/linuxrc";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x2 0x00000000>;
+	};
+};
+
+&fin_pll {
+	clock-frequency = <24000000>;
+};
+
+&serial_0 {
+	status = "okay";
+};
+
+&serial_1 {
+	status = "okay";
+};
+
+&clock_cmu {
+	status = "okay";
+};
+
+&clock_imem {
+	status = "okay";
+};
+
+&clock_peric {
+	status = "okay";
+};
+
+&smmu_isp {
+	status = "okay";
+};
+
+&clock_fsys0 {
+	status = "okay";
+};
+
+&clock_fsys1 {
+	status = "okay";
+};
+
+&smmu_peric {
+	status = "okay";
+};
+
+&smmu_imem {
+	status = "okay";
+};
+
+&smmu_fsys0 {
+	status = "okay";
+};
+
+&hsi2c_0 {
+	status = "okay";
+};
+
+&hsi2c_1 {
+	status = "okay";
+};
+
+&hsi2c_2 {
+	status = "okay";
+};
+
+&hsi2c_3 {
+	status = "okay";
+};
+
+&hsi2c_4 {
+	status = "okay";
+};
+
+&hsi2c_5 {
+	status = "okay";
+};
+
+&hsi2c_6 {
+	status = "okay";
+};
+
+&hsi2c_7 {
+	status = "okay";
+};
+
+&pwm_0 {
+	status = "okay";
+};
+
+&pwm_1 {
+	status = "okay";
+};
+
+&mdma0 {
+	status = "okay";
+};
+
+&mdma1 {
+	status = "okay";
+};
+
+&pdma0 {
+	status = "okay";
+};
+
+&pdma1 {
+	status = "okay";
+};