bcm2837.dtsi (4053B)
1#include "bcm283x.dtsi" 2#include "bcm2835-common.dtsi" 3#include "bcm2835-rpi-common.dtsi" 4 5/ { 6 compatible = "brcm,bcm2837"; 7 8 soc { 9 ranges = <0x7e000000 0x3f000000 0x1000000>, 10 <0x40000000 0x40000000 0x00001000>; 11 dma-ranges = <0xc0000000 0x00000000 0x3f000000>; 12 13 local_intc: local_intc@40000000 { 14 compatible = "brcm,bcm2836-l1-intc"; 15 reg = <0x40000000 0x100>; 16 interrupt-controller; 17 #interrupt-cells = <2>; 18 interrupt-parent = <&local_intc>; 19 }; 20 }; 21 22 arm-pmu { 23 compatible = "arm,cortex-a53-pmu"; 24 interrupt-parent = <&local_intc>; 25 interrupts = <9 IRQ_TYPE_LEVEL_HIGH>; 26 }; 27 28 timer { 29 compatible = "arm,armv7-timer"; 30 interrupt-parent = <&local_intc>; 31 interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, // PHYS_SECURE_PPI 32 <1 IRQ_TYPE_LEVEL_HIGH>, // PHYS_NONSECURE_PPI 33 <3 IRQ_TYPE_LEVEL_HIGH>, // VIRT_PPI 34 <2 IRQ_TYPE_LEVEL_HIGH>; // HYP_PPI 35 always-on; 36 }; 37 38 cpus: cpus { 39 #address-cells = <1>; 40 #size-cells = <0>; 41 enable-method = "brcm,bcm2836-smp"; // for ARM 32-bit 42 43 /* Source for d/i-cache-line-size and d/i-cache-sets 44 * https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system 45 * /about-the-l1-memory-system?lang=en 46 * 47 * Source for d/i-cache-size 48 * https://magpi.raspberrypi.com/articles/raspberry-pi-3-specs-benchmarks 49 */ 50 cpu0: cpu@0 { 51 device_type = "cpu"; 52 compatible = "arm,cortex-a53"; 53 reg = <0>; 54 enable-method = "spin-table"; 55 cpu-release-addr = <0x0 0x000000d8>; 56 d-cache-size = <0x8000>; 57 d-cache-line-size = <64>; 58 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 59 i-cache-size = <0x8000>; 60 i-cache-line-size = <64>; 61 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 62 next-level-cache = <&l2>; 63 }; 64 65 cpu1: cpu@1 { 66 device_type = "cpu"; 67 compatible = "arm,cortex-a53"; 68 reg = <1>; 69 enable-method = "spin-table"; 70 cpu-release-addr = <0x0 0x000000e0>; 71 d-cache-size = <0x8000>; 72 d-cache-line-size = <64>; 73 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 74 i-cache-size = <0x8000>; 75 i-cache-line-size = <64>; 76 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 77 next-level-cache = <&l2>; 78 }; 79 80 cpu2: cpu@2 { 81 device_type = "cpu"; 82 compatible = "arm,cortex-a53"; 83 reg = <2>; 84 enable-method = "spin-table"; 85 cpu-release-addr = <0x0 0x000000e8>; 86 d-cache-size = <0x8000>; 87 d-cache-line-size = <64>; 88 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 89 i-cache-size = <0x8000>; 90 i-cache-line-size = <64>; 91 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 92 next-level-cache = <&l2>; 93 }; 94 95 cpu3: cpu@3 { 96 device_type = "cpu"; 97 compatible = "arm,cortex-a53"; 98 reg = <3>; 99 enable-method = "spin-table"; 100 cpu-release-addr = <0x0 0x000000f0>; 101 d-cache-size = <0x8000>; 102 d-cache-line-size = <64>; 103 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 104 i-cache-size = <0x8000>; 105 i-cache-line-size = <64>; 106 i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set 107 next-level-cache = <&l2>; 108 }; 109 110 /* Source for cache-line-size + cache-sets 111 * https://developer.arm.com/documentation/ddi0500 112 * /e/level-2-memory-system/about-the-l2-memory-system?lang=en 113 * Source for cache-size 114 * https://datasheets.raspberrypi.com/cm/cm1-and-cm3-datasheet.pdf 115 */ 116 l2: l2-cache0 { 117 compatible = "cache"; 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};