1#include "bcm283x.dtsi" 2#include "bcm2835-common.dtsi" 3 4/ { 5 compatible = "brcm,bcm2837"; 6 7 soc { 8 ranges = <0x7e000000 0x3f000000 0x1000000>, 9 <0x40000000 0x40000000 0x00001000>; 10 dma-ranges = <0xc0000000 0x00000000 0x3f000000>; 11 12 local_intc: local_intc@40000000 { 13 compatible = "brcm,bcm2836-l1-intc"; 14 reg = <0x40000000 0x100>; 15 interrupt-controller; 16 #interrupt-cells = <2>; 17 interrupt-parent = <&local_intc>; 18 }; 19 }; 20 21 arm-pmu { 22 compatible = "arm,cortex-a53-pmu"; 23 interrupt-parent = <&local_intc>; 24 interrupts = <9 IRQ_TYPE_LEVEL_HIGH>; 25 }; 26 27 timer { 28 compatible = "arm,armv7-timer"; 29 interrupt-parent = <&local_intc>; 30 interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, // PHYS_SECURE_PPI 31 <1 IRQ_TYPE_LEVEL_HIGH>, // PHYS_NONSECURE_PPI 32 <3 IRQ_TYPE_LEVEL_HIGH>, // VIRT_PPI 33 <2 IRQ_TYPE_LEVEL_HIGH>; // HYP_PPI 34 always-on; 35 }; 36 37 cpus: cpus { 38 #address-cells = <1>; 39 #size-cells = <0>; 40 enable-method = "brcm,bcm2836-smp"; // for ARM 32-bit 41 42 /* Source for d/i-cache-line-size and d/i-cache-sets 43 * https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system 44 * /about-the-l1-memory-system?lang=en 45 * 46 * Source for d/i-cache-size 47 * https://magpi.raspberrypi.com/articles/raspberry-pi-3-specs-benchmarks 48 */ 49 cpu0: cpu@0 { 50 device_type = "cpu"; 51 compatible = "arm,cortex-a53"; 52 reg = <0>; 53 enable-method = "spin-table"; 54 cpu-release-addr = <0x0 0x000000d8>; 55 d-cache-size = <0x8000>; 56 d-cache-line-size = <64>; 57 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 58 i-cache-size = <0x8000>; 59 i-cache-line-size = <64>; 60 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 61 next-level-cache = <&l2>; 62 }; 63 64 cpu1: cpu@1 { 65 device_type = "cpu"; 66 compatible = "arm,cortex-a53"; 67 reg = <1>; 68 enable-method = "spin-table"; 69 cpu-release-addr = <0x0 0x000000e0>; 70 d-cache-size = <0x8000>; 71 d-cache-line-size = <64>; 72 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 73 i-cache-size = <0x8000>; 74 i-cache-line-size = <64>; 75 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 76 next-level-cache = <&l2>; 77 }; 78 79 cpu2: cpu@2 { 80 device_type = "cpu"; 81 compatible = "arm,cortex-a53"; 82 reg = <2>; 83 enable-method = "spin-table"; 84 cpu-release-addr = <0x0 0x000000e8>; 85 d-cache-size = <0x8000>; 86 d-cache-line-size = <64>; 87 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 88 i-cache-size = <0x8000>; 89 i-cache-line-size = <64>; 90 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 91 next-level-cache = <&l2>; 92 }; 93 94 cpu3: cpu@3 { 95 device_type = "cpu"; 96 compatible = "arm,cortex-a53"; 97 reg = <3>; 98 enable-method = "spin-table"; 99 cpu-release-addr = <0x0 0x000000f0>; 100 d-cache-size = <0x8000>; 101 d-cache-line-size = <64>; 102 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 103 i-cache-size = <0x8000>; 104 i-cache-line-size = <64>; 105 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 106 next-level-cache = <&l2>; 107 }; 108 109 /* Source for cache-line-size + cache-sets 110 * https://developer.arm.com/documentation/ddi0500 111 * /e/level-2-memory-system/about-the-l2-memory-system?lang=en 112 * Source for cache-size 113 * https://datasheets.raspberrypi.com/cm/cm1-and-cm3-datasheet.pdf 114 */ 115 l2: l2-cache0 { 116 compatible = "cache"; 117 cache-unified; 118 cache-size = <0x80000>; 119 cache-line-size = <64>; 120 cache-sets = <512>; // 512KiB(size)/64(line-size)=8192ways/16-way set 121 cache-level = <2>; 122 }; 123 }; 124}; 125 126/* Make the BCM2835-style global interrupt controller be a child of the 127 * CPU-local interrupt controller. 128 */ 129&intc { 130 compatible = "brcm,bcm2836-armctrl-ic"; 131 reg = <0x7e00b200 0x200>; 132 interrupt-parent = <&local_intc>; 133 interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; 134}; 135 136&cpu_thermal { 137 coefficients = <(-538) 412000>; 138}; 139 140/* enable thermal sensor with the correct compatible property set */ 141&thermal { 142 compatible = "brcm,bcm2837-thermal"; 143 status = "okay"; 144}; 145