board: samsung: add Samsung Galaxy S9/S9+(SM-G96x0) board

Samsung S9 SM-G9600 - Snapdragon SDM845 version of the phone,
for China \ Hong Kong markets.
Has unlockable bootloader, unlike SM-G960U (American market version),
which allows running u-boot as a chain-loaded bootloader.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a7222cc..fdf85da 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -477,6 +477,7 @@
 
 dtb-$(CONFIG_TARGET_DRAGONBOARD410C) += dragonboard410c.dtb
 dtb-$(CONFIG_TARGET_DRAGONBOARD820C) += dragonboard820c.dtb
+dtb-$(CONFIG_TARGET_STARQLTECHN) += starqltechn.dtb
 
 dtb-$(CONFIG_TARGET_STEMMY) += ste-ux500-samsung-stemmy.dtb
 
diff --git a/arch/arm/dts/starqltechn-uboot.dtsi b/arch/arm/dts/starqltechn-uboot.dtsi
new file mode 100644
index 0000000..d8d75e0
--- /dev/null
+++ b/arch/arm/dts/starqltechn-uboot.dtsi
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * U-Boot addition to handle Samsung S9 SM-G9600 (starqltechn) pins
+ *
+ * (C) Copyright 2021 Dzmitry Sankouski <dsankouski@gmail.com>
+ *
+ */
+
+/
+{
+	soc {
+		u-boot,dm-pre-reloc;
+		gcc {
+			clock-controller@100000 {
+				u-boot,dm-pre-reloc;
+			};
+			serial@0xa84000 {
+				u-boot,dm-pre-reloc;
+			};
+			gpio_north@3900000 {
+				u-boot,dm-pre-reloc;
+			};
+			pinctrl@3900000 {
+				u-boot,dm-pre-reloc;
+			};
+		};
+	};
+};
+
+&pm8998_pon {
+	key_vol_down {
+		gpios = <&pm8998_pon 1 0>;
+		label = "key_vol_down";
+	};
+	key_power {
+		gpios = <&pm8998_pon 0 0>;
+		label = "key_power";
+	};
+};
diff --git a/arch/arm/dts/starqltechn.dts b/arch/arm/dts/starqltechn.dts
new file mode 100644
index 0000000..387420f
--- /dev/null
+++ b/arch/arm/dts/starqltechn.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Samsung S9 SM-G9600 (starqltechn) board device tree source
+ *
+ * (C) Copyright 2021 Dzmitry Sankouski <dsankouski@gmail.com>
+ *
+ */
+
+/dts-v1/;
+
+#include "sdm845.dtsi"
+
+/ {
+	model = "Samsung S9 (SM-G9600)";
+	compatible = "qcom,sdm845-mtp", "qcom,sdm845", "qcom,mtp";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	chosen {
+		stdout-path = "serial0:921600n8";
+	};
+
+	aliases {
+		serial0 = &debug_uart;
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0x80000000 0 0xfe1bffff>;
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	soc: soc {
+		serial@0xa84000 {
+			status = "ok";
+		};
+
+		pinctrl@3900000 {
+			muic_i2c: muic_i2c {
+				pins = "GPIO_33", "GPIO_34";
+				drive-strength = <0x2>;
+				function = "gpio";
+				bias-disable;
+			};
+		};
+	};
+};
+
+#include "starqltechn-uboot.dtsi"
diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
index 1a6a608..12cf02a 100644
--- a/arch/arm/mach-snapdragon/Kconfig
+++ b/arch/arm/mach-snapdragon/Kconfig
@@ -12,6 +12,10 @@
 config SDM845
 	bool "Qualcomm Snapdragon 845 SoC"
 	default n
+	select LINUX_KERNEL_IMAGE_HEADER
+
+config LNX_KRNL_IMG_TEXT_OFFSET_BASE
+	default 0x80000000
 
 choice
 	prompt "Snapdragon board select"
@@ -40,9 +44,22 @@
 	  - 3GiB RAM
 	  - 32GiB UFS drive
 
+config TARGET_STARQLTECHN
+	bool "Samsung S9 SM-G9600(starqltechn)"
+	help
+	  Support for Samsung S9 SM-G9600(starqltechn) board.
+	  Features:
+	  - Qualcomm Snapdragon SDM845 SoC
+	  - 4GiB RAM
+	  - 64GiB UFS drive
+	select MISC_INIT_R
+	select SDM845
+	select DM_ETH if NET
+
 endchoice
 
 source "board/qualcomm/dragonboard410c/Kconfig"
 source "board/qualcomm/dragonboard820c/Kconfig"
+source "board/samsung/starqltechn/Kconfig"
 
 endif