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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | #include "bcm283x.dtsi" / { compatible = "brcm,bcm2837"; soc { ranges = <0x7e000000 0x3f000000 0x1000000>, <0x40000000 0x40000000 0x00001000>; dma-ranges = <0xc0000000 0x00000000 0x3f000000>; local_intc: local_intc@40000000 { compatible = "brcm,bcm2836-l1-intc"; reg = <0x40000000 0x100>; interrupt-controller; #interrupt-cells = <2>; interrupt-parent = <&local_intc>; }; }; arm-pmu { compatible = "arm,cortex-a53-pmu"; interrupt-parent = <&local_intc>; interrupts = <9 IRQ_TYPE_LEVEL_HIGH>; }; timer { compatible = "arm,armv7-timer"; interrupt-parent = <&local_intc>; interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, // PHYS_SECURE_PPI <1 IRQ_TYPE_LEVEL_HIGH>, // PHYS_NONSECURE_PPI <3 IRQ_TYPE_LEVEL_HIGH>, // VIRT_PPI <2 IRQ_TYPE_LEVEL_HIGH>; // HYP_PPI always-on; }; cpus: cpus { #address-cells = <1>; #size-cells = <0>; enable-method = "brcm,bcm2836-smp"; // for ARM 32-bit /* Source for d/i-cache-line-size and d/i-cache-sets * https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system * /about-the-l1-memory-system?lang=en * * Source for d/i-cache-size * https://magpi.raspberrypi.com/articles/raspberry-pi-3-specs-benchmarks */ cpu0: cpu@0 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <0>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000d8>; d-cache-size = <0x8000>; d-cache-line-size = <64>; d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set i-cache-size = <0x8000>; i-cache-line-size = <64>; i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set next-level-cache = <&l2>; }; cpu1: cpu@1 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <1>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000e0>; d-cache-size = <0x8000>; d-cache-line-size = <64>; d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set i-cache-size = <0x8000>; i-cache-line-size = <64>; i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set next-level-cache = <&l2>; }; cpu2: cpu@2 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <2>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000e8>; d-cache-size = <0x8000>; d-cache-line-size = <64>; d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set i-cache-size = <0x8000>; i-cache-line-size = <64>; i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set next-level-cache = <&l2>; }; cpu3: cpu@3 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <3>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000f0>; d-cache-size = <0x8000>; d-cache-line-size = <64>; d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set i-cache-size = <0x8000>; i-cache-line-size = <64>; i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set next-level-cache = <&l2>; }; /* Source for cache-line-size + cache-sets * https://developer.arm.com/documentation/ddi0500 * /e/level-2-memory-system/about-the-l2-memory-system?lang=en * Source for cache-size * https://datasheets.raspberrypi.com/cm/cm1-and-cm3-datasheet.pdf */ l2: l2-cache0 { compatible = "cache"; cache-size = <0x80000>; cache-line-size = <64>; cache-sets = <512>; // 512KiB(size)/64(line-size)=8192ways/16-way set cache-level = <2>; }; }; }; /* Make the BCM2835-style global interrupt controller be a child of the * CPU-local interrupt controller. */ &intc { compatible = "brcm,bcm2836-armctrl-ic"; reg = <0x7e00b200 0x200>; interrupt-parent = <&local_intc>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; }; &cpu_thermal { coefficients = <(-538) 412000>; }; /* enable thermal sensor with the correct compatible property set */ &thermal { compatible = "brcm,bcm2837-thermal"; status = "okay"; }; |