alistair23-linux/arch/arm/boot/dts/exynos5420-cpus.dtsi

// SPDX-License-Identifier: GPL-2.0
/*
 * SAMSUNG EXYNOS5420 SoC cpu device tree source
 *
 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com
 *
 * This file provides desired ordering for Exynos5420 and Exynos5800
 * boards: CPU[0123] being the A15.
 *
 * The Exynos5420, 5422 and 5800 actually share the same CPU configuration
 * but particular boards choose different booting order.
 *
 * Exynos5420 and Exynos5800 always boot from Cortex-A15. On Exynos5422
 * booting cluster (big or LITTLE) is chosen by IROM code by reading
 * the gpg2-1 GPIO. By default all Exynos5422 based boards choose booting
 * from the LITTLE: Cortex-A7.
 */

/ {
	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a15";
			reg = <0x0>;
			clocks = <&clock CLK_ARM_CLK>;
			clock-frequency = <1800000000>;
			cci-control-port = <&cci_control1>;
			operating-points-v2 = <&cluster_a15_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <1024>;
		};

		cpu1: cpu@1 {
			device_type = "cpu";
			compatible = "arm,cortex-a15";
			reg = <0x1>;
			clocks = <&clock CLK_ARM_CLK>;
			clock-frequency = <1800000000>;
			cci-control-port = <&cci_control1>;
			operating-points-v2 = <&cluster_a15_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <1024>;
		};

		cpu2: cpu@2 {
			device_type = "cpu";
			compatible = "arm,cortex-a15";
			reg = <0x2>;
			clocks = <&clock CLK_ARM_CLK>;
			clock-frequency = <1800000000>;
			cci-control-port = <&cci_control1>;
			operating-points-v2 = <&cluster_a15_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <1024>;
		};

		cpu3: cpu@3 {
			device_type = "cpu";
			compatible = "arm,cortex-a15";
			reg = <0x3>;
			clocks = <&clock CLK_ARM_CLK>;
			clock-frequency = <1800000000>;
			cci-control-port = <&cci_control1>;
			operating-points-v2 = <&cluster_a15_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <1024>;
		};

		cpu4: cpu@100 {
			device_type = "cpu";
			compatible = "arm,cortex-a7";
			reg = <0x100>;
			clocks = <&clock CLK_KFC_CLK>;
			clock-frequency = <1000000000>;
			cci-control-port = <&cci_control0>;
			operating-points-v2 = <&cluster_a7_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <539>;
		};

		cpu5: cpu@101 {
			device_type = "cpu";
			compatible = "arm,cortex-a7";
			reg = <0x101>;
			clocks = <&clock CLK_KFC_CLK>;
			clock-frequency = <1000000000>;
			cci-control-port = <&cci_control0>;
			operating-points-v2 = <&cluster_a7_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <539>;
		};

		cpu6: cpu@102 {
			device_type = "cpu";
			compatible = "arm,cortex-a7";
			reg = <0x102>;
			clocks = <&clock CLK_KFC_CLK>;
			clock-frequency = <1000000000>;
			cci-control-port = <&cci_control0>;
			operating-points-v2 = <&cluster_a7_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <539>;
		};

		cpu7: cpu@103 {
			device_type = "cpu";
			compatible = "arm,cortex-a7";
			reg = <0x103>;
			clocks = <&clock CLK_KFC_CLK>;
			clock-frequency = <1000000000>;
			cci-control-port = <&cci_control0>;
			operating-points-v2 = <&cluster_a7_opp_table>;
			#cooling-cells = <2>; /* min followed by max */
			capacity-dmips-mhz = <539>;
		};
	};
};

&arm_a7_pmu {
	interrupt-affinity = <&cpu4>, <&cpu5>, <&cpu6>, <&cpu7>;
	status = "okay";
};

&arm_a15_pmu {
	interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
	status = "okay";
};