arm64: dts: Add Unisoc's SC9863A SoC support

Add basic DT to support Unisoc's SC9863A, with this patch,
the board sp9863a-1h10 can run into console.

Link: https://lore.kernel.org/r/20191223092948.24824-4-zhang.lyra@gmail.comSigned-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm64/boot/dts/sprd/Makefile

 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_SPRD) += sc9836-openphone.dtb \
-			sp9860g-1h10.dtb
+			sp9860g-1h10.dtb	\
+			sp9863a-1h10.dtb

arch/arm64/boot/dts/sprd/sharkl3.dtsi

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Unisoc Sharkl3 platform DTS file
+ *
+ * Copyright (C) 2019, Unisoc Inc.
+ */
+
+/ {
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		apb@70000000 {
+			compatible = "simple-bus";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0x0 0x70000000 0x10000000>;
+
+			uart0: serial@0 {
+				compatible = "sprd,sc9863a-uart",
+					     "sprd,sc9836-uart";
+				reg = <0x0 0x100>;
+				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ext_26m>;
+				status = "disabled";
+			};
+
+			uart1: serial@100000 {
+				compatible = "sprd,sc9863a-uart",
+					     "sprd,sc9836-uart";
+				reg = <0x100000 0x100>;
+				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ext_26m>;
+				status = "disabled";
+			};
+
+			uart2: serial@200000 {
+				compatible = "sprd,sc9863a-uart",
+					     "sprd,sc9836-uart";
+				reg = <0x200000 0x100>;
+				interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ext_26m>;
+				status = "disabled";
+			};
+
+			uart3: serial@300000 {
+				compatible = "sprd,sc9863a-uart",
+					     "sprd,sc9836-uart";
+				reg = <0x300000 0x100>;
+				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ext_26m>;
+				status = "disabled";
+			};
+
+			uart4: serial@400000 {
+				compatible = "sprd,sc9863a-uart",
+					     "sprd,sc9836-uart";
+				reg = <0x400000 0x100>;
+				interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ext_26m>;
+				status = "disabled";
+			};
+		};
+	};
+
+	ext_26m: ext-26m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <26000000>;
+		clock-output-names = "ext-26m";
+	};
+};

arch/arm64/boot/dts/sprd/sp9863a-1h10.dts

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Unisoc SP9863A-1h10 boards DTS file
+ *
+ * Copyright (C) 2019, Unisoc Inc.
+ */
+
+/dts-v1/;
+
+#include "sc9863a.dtsi"
+
+/ {
+	model = "Spreadtrum SP9863A-1H10 Board";
+
+	compatible = "sprd,sp9863a-1h10", "sprd,sc9863a";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x0 0x80000000>;
+	};
+
+	chosen {
+		stdout-path = "serial1:115200n8";
+		bootargs = "earlycon";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};