bcm2836.dtsi (3904B)
1// SPDX-License-Identifier: GPL-2.0 2#include "bcm283x.dtsi" 3#include "bcm2835-common.dtsi" 4#include "bcm2835-rpi-common.dtsi" 5 6/ { 7 compatible = "brcm,bcm2836"; 8 9 soc { 10 ranges = <0x7e000000 0x3f000000 0x1000000>, 11 <0x40000000 0x40000000 0x00001000>; 12 dma-ranges = <0xc0000000 0x00000000 0x3f000000>; 13 14 local_intc: local_intc@40000000 { 15 compatible = "brcm,bcm2836-l1-intc"; 16 reg = <0x40000000 0x100>; 17 interrupt-controller; 18 #interrupt-cells = <2>; 19 interrupt-parent = <&local_intc>; 20 }; 21 }; 22 23 arm-pmu { 24 compatible = "arm,cortex-a7-pmu"; 25 interrupt-parent = <&local_intc>; 26 interrupts = <9 IRQ_TYPE_LEVEL_HIGH>; 27 }; 28 29 timer { 30 compatible = "arm,armv7-timer"; 31 interrupt-parent = <&local_intc>; 32 interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, // PHYS_SECURE_PPI 33 <1 IRQ_TYPE_LEVEL_HIGH>, // PHYS_NONSECURE_PPI 34 <3 IRQ_TYPE_LEVEL_HIGH>, // VIRT_PPI 35 <2 IRQ_TYPE_LEVEL_HIGH>; // HYP_PPI 36 always-on; 37 }; 38 39 cpus: cpus { 40 #address-cells = <1>; 41 #size-cells = <0>; 42 enable-method = "brcm,bcm2836-smp"; 43 44 /* Source for d/i-cache-line-size and d/i-cache-sets 45 * https://developer.arm.com/documentation/ddi0464/f/L1-Memory-System 46 * /About-the-L1-memory-system?lang=en 47 * 48 * Source for d/i-cache-size 49 * https://forums.raspberrypi.com/viewtopic.php?t=98428 50 */ 51 52 v7_cpu0: cpu@0 { 53 device_type = "cpu"; 54 compatible = "arm,cortex-a7"; 55 reg = <0xf00>; 56 clock-frequency = <800000000>; 57 d-cache-size = <0x8000>; 58 d-cache-line-size = <64>; 59 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 60 i-cache-size = <0x8000>; 61 i-cache-line-size = <32>; 62 i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set 63 next-level-cache = <&l2>; 64 }; 65 66 v7_cpu1: cpu@1 { 67 device_type = "cpu"; 68 compatible = "arm,cortex-a7"; 69 reg = <0xf01>; 70 clock-frequency = <800000000>; 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 = <32>; 76 i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set 77 next-level-cache = <&l2>; 78 }; 79 80 v7_cpu2: cpu@2 { 81 device_type = "cpu"; 82 compatible = "arm,cortex-a7"; 83 reg = <0xf02>; 84 clock-frequency = <800000000>; 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 = <32>; 90 i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set 91 next-level-cache = <&l2>; 92 }; 93 94 v7_cpu3: cpu@3 { 95 device_type = "cpu"; 96 compatible = "arm,cortex-a7"; 97 reg = <0xf03>; 98 clock-frequency = <800000000>; 99 d-cache-size = <0x8000>; 100 d-cache-line-size = <64>; 101 d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set 102 i-cache-size = <0x8000>; 103 i-cache-line-size = <32>; 104 i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set 105 next-level-cache = <&l2>; 106 }; 107 108 /* Source for cache-line-size + cache-sets 109 * https://developer.arm.com/documentation/ddi0464/f/L2-Memory-System 110 * /About-the-L2-Memory-system?lang=en 111 * Source for cache-size 112 * https://forums.raspberrypi.com/viewtopic.php?t=98428 113 */ 114 l2: l2-cache0 { 115 compatible = "cache"; 116 cache-size = <0x80000>; 117 cache-line-size = <64>; 118 cache-sets = <1024>; // 512KiB(size)/64(line-size)=8192ways/8-way set 119 cache-level = <2>; 120 }; 121 }; 122}; 123 124/* Make the BCM2835-style global interrupt controller be a child of the 125 * CPU-local interrupt controller. 126 */ 127&intc { 128 compatible = "brcm,bcm2836-armctrl-ic"; 129 reg = <0x7e00b200 0x200>; 130 interrupt-parent = <&local_intc>; 131 interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; 132}; 133 134&cpu_thermal { 135 coefficients = <(-538) 407000>; 136}; 137 138/* enable thermal sensor with the correct compatible property set */ 139&thermal { 140 compatible = "brcm,bcm2836-thermal"; 141 status = "okay"; 142};