[PATCH 4/5] arm64: dts: mediatek: Add MT6895 SoC

[Alexander Letuchiy]

Add initial support for the MediaTek MT6895 (Dimensity 8100) SoC, which
has four Cortex-A55 and four Cortex-A78 cores.

Describe the CPUs, PSCI, the GICv3 interrupt controller, the architected
timer, two UARTs and the watchdog. There is no clock controller driver
for this SoC yet, so both UART clocks use a fixed 26 MHz clock.

Signed-off-by: Alexander Letuchiy <asalde.le1@xxxxxxxxx>
---
 arch/arm64/boot/dts/mediatek/mt6895.dtsi | 166 +++++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt6895.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/mt6895.dtsi b/arch/arm64/boot/dts/mediatek/mt6895.dtsi
new file mode 100644
index 000000000000..c80f30da7bf9
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt6895.dtsi
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt6895";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+
+				core1 {
+					cpu = <&cpu1>;
+				};
+
+				core2 {
+					cpu = <&cpu2>;
+				};
+
+				core3 {
+					cpu = <&cpu3>;
+				};
+
+				core4 {
+					cpu = <&cpu4>;
+				};
+
+				core5 {
+					cpu = <&cpu5>;
+				};
+
+				core6 {
+					cpu = <&cpu6>;
+				};
+
+				core7 {
+					cpu = <&cpu7>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x0>;
+			enable-method = "psci";
+		};
+
+		cpu1: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x100>;
+			enable-method = "psci";
+		};
+
+		cpu2: cpu@200 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x200>;
+			enable-method = "psci";
+		};
+
+		cpu3: cpu@300 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x300>;
+			enable-method = "psci";
+		};
+
+		cpu4: cpu@400 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a78";
+			reg = <0x400>;
+			enable-method = "psci";
+		};
+
+		cpu5: cpu@500 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a78";
+			reg = <0x500>;
+			enable-method = "psci";
+		};
+
+		cpu6: cpu@600 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a78";
+			reg = <0x600>;
+			enable-method = "psci";
+		};
+
+		cpu7: cpu@700 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a78";
+			reg = <0x700>;
+			enable-method = "psci";
+		};
+	};
+
+	clk26m: clock-26m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <26000000>;
+		clock-output-names = "clk26m";
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW 0>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <2>;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			reg = <0 0x0c000000 0 0x40000>,
+			      <0 0x0c040000 0 0x200000>;
+			#interrupt-cells = <4>;
+			interrupt-controller;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
+		};
+
+		uart0: serial@11001000 {
+			compatible = "mediatek,mt6895-uart", "mediatek,mt6577-uart";
+			reg = <0 0x11001000 0 0x1000>;
+			interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH 0>;
+			clocks = <&clk26m>, <&clk26m>;
+			clock-names = "baud", "bus";
+			status = "disabled";
+		};
+
+		uart1: serial@11002000 {
+			compatible = "mediatek,mt6895-uart", "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x1000>;
+			interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH 0>;
+			clocks = <&clk26m>, <&clk26m>;
+			clock-names = "baud", "bus";
+			status = "disabled";
+		};
+
+		watchdog: watchdog@1c007000 {
+			compatible = "mediatek,mt6895-wdt", "mediatek,mt6589-wdt";
+			reg = <0 0x1c007000 0 0x100>;
+		};
+	};
+};
-- 
2.56.0