[PATCH v2 6/6] arm64: dts: cix: add initial CIX P1(SKY1) dts support

[Peter Chen <peter.chen@cixtech.com>]

CIX SKY1 SoC is high performance Armv9 SoC designed by Cixtech,
and Orion O6 is open source motherboard launched by Radxa.
See below for detail:
https://docs.radxa.com/en/orion/o6/getting-started/introduction

In this commit, it only adds limited components for running initramfs
at Orion O6.

Acked-by: Fugang Duan <fugang.duan@cixtech.com>
Signed-off-by: Peter Chen <peter.chen@cixtech.com>
---
Changes for v2:
- Corrects the SoF tag's name
- Fix several coding sytle issues
- move linux,cma node to dts file
- delete memory node, memory size is passed by firmware
- delete uart2 node which will be added in future patches
- Improve for pmu and cpu node to stands for more specific cpu model
- Improve the timer node and add hypervisor virtual timer irq
- Pass "make O=$OUTKNL CHECK_DTBS=y W=1 cix/sky1-orion-o6.dtb"

 arch/arm64/boot/dts/Makefile              |   1 +
 arch/arm64/boot/dts/cix/Makefile          |   2 +
 arch/arm64/boot/dts/cix/sky1-orion-o6.dts |  26 +++
 arch/arm64/boot/dts/cix/sky1.dtsi         | 217 ++++++++++++++++++++++
 4 files changed, 246 insertions(+)
 create mode 100644 arch/arm64/boot/dts/cix/Makefile
 create mode 100644 arch/arm64/boot/dts/cix/sky1-orion-o6.dts
 create mode 100644 arch/arm64/boot/dts/cix/sky1.dtsi

diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index 79b73a21ddc2..8e7ccd0027bd 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -13,6 +13,7 @@ subdir-y += bitmain
 subdir-y += blaize
 subdir-y += broadcom
 subdir-y += cavium
+subdir-y += cix
 subdir-y += exynos
 subdir-y += freescale
 subdir-y += hisilicon
diff --git a/arch/arm64/boot/dts/cix/Makefile b/arch/arm64/boot/dts/cix/Makefile
new file mode 100644
index 000000000000..ed3713982012
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_CIX) += sky1-orion-o6.dtb
diff --git a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
new file mode 100644
index 000000000000..78f4fcd87216
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright 2025 Cix Technology Group Co., Ltd.
+ *
+ */
+
+/dts-v1/;
+
+#include "sky1.dtsi"
+/ {
+	model = "Radxa Orion O6";
+	compatible = "radxa,orion-o6", "cix,sky1";
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x0 0x28000000>;
+			linux,cma-default;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/cix/sky1.dtsi b/arch/arm64/boot/dts/cix/sky1.dtsi
new file mode 100644
index 000000000000..709512fafe51
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/sky1.dtsi
@@ -0,0 +1,217 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright 2025 Cix Technology Group Co., Ltd.
+ *
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a520";
+			enable-method = "psci";
+			reg = <0x0 0x0>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <403>;
+		};
+
+		cpu1: cpu@100 {
+			compatible = "arm,cortex-a520";
+			enable-method = "psci";
+			reg = <0x0 0x100>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <403>;
+		};
+
+		cpu2: cpu@200 {
+			compatible = "arm,cortex-a520";
+			enable-method = "psci";
+			reg = <0x0 0x200>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <403>;
+		};
+
+		cpu3: cpu@300 {
+			compatible = "arm,cortex-a520";
+			enable-method = "psci";
+			reg = <0x0 0x300>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <403>;
+		};
+
+		cpu4: cpu@400 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x400>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu5: cpu@500 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x500>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu6: cpu@600 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x600>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu7: cpu@700 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x700>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu8: cpu@800 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x800>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu9: cpu@900 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0x900>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu10: cpu@a00 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0xa00>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu11: cpu@b00 {
+			compatible = "arm,cortex-a720";
+			enable-method = "psci";
+			reg = <0x0 0xb00>;
+			device_type = "cpu";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		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>;
+				};
+				core8 {
+					cpu = <&cpu8>;
+				};
+				core9 {
+					cpu = <&cpu9>;
+				};
+				core10 {
+					cpu = <&cpu10>;
+				};
+				core11 {
+					cpu = <&cpu11>;
+				};
+			};
+		};
+
+	};
+
+	pmu-a520 {
+		compatible = "arm,cortex-a520-pmu";
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	pmu-a720 {
+		compatible = "arm,cortex-a720-pmu";
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	pmu-spe {
+		compatible = "arm,statistical-profiling-extension-v1";
+		interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	soc@0 {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0 0 0 0 0x20 0>;
+		dma-ranges;
+
+		gic: interrupt-controller@e010000 {
+			compatible = "arm,gic-v3";
+			reg = <0x0 0x0e010000 0 0x10000>,	/* GICD */
+			      <0x0 0x0e090000 0 0x300000>;       /* GICR * 12 */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			#redistributor-regions = <1>;
+			redistributor-stride = <0 0x40000>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+
+			gic_its: msi-controller@e050000 {
+				compatible = "arm,gic-v3-its";
+				reg = <0x0 0x0e050000 0x0 0x30000>;
+				msi-controller;
+				#msi-cells = <1>;
+			};
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-names = "sec-phys", "phys", "virt", "hyp-phys", "hyp-virt";
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 12 IRQ_TYPE_LEVEL_LOW>;
+		clock-frequency = <1000000000>;
+		arm,no-tick-in-suspend;
+	};
+};
-- 
2.25.1