diff options
Diffstat (limited to 'arch/arm/boot/dts/bcm2836.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/bcm2836.dtsi | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2836.dtsi b/arch/arm/boot/dts/bcm2836.dtsi new file mode 100644 index 000000000..534dacfc4 --- /dev/null +++ b/arch/arm/boot/dts/bcm2836.dtsi @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "bcm283x.dtsi" +#include "bcm2835-common.dtsi" +#include "bcm2835-rpi-common.dtsi" + +/ { + compatible = "brcm,bcm2836"; + + 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-a7-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"; + + /* Source for d/i-cache-line-size and d/i-cache-sets + * https://developer.arm.com/documentation/ddi0464/f/L1-Memory-System + * /About-the-L1-memory-system?lang=en + * + * Source for d/i-cache-size + * https://forums.raspberrypi.com/viewtopic.php?t=98428 + */ + + v7_cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf00>; + clock-frequency = <800000000>; + 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 = <32>; + i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set + next-level-cache = <&l2>; + }; + + v7_cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf01>; + clock-frequency = <800000000>; + 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 = <32>; + i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set + next-level-cache = <&l2>; + }; + + v7_cpu2: cpu@2 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf02>; + clock-frequency = <800000000>; + 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 = <32>; + i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set + next-level-cache = <&l2>; + }; + + v7_cpu3: cpu@3 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf03>; + clock-frequency = <800000000>; + 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 = <32>; + i-cache-sets = <512>; // 32KiB(size)/32(line-size)=1024ways/2-way set + next-level-cache = <&l2>; + }; + + /* Source for cache-line-size + cache-sets + * https://developer.arm.com/documentation/ddi0464/f/L2-Memory-System + * /About-the-L2-Memory-system?lang=en + * Source for cache-size + * https://forums.raspberrypi.com/viewtopic.php?t=98428 + */ + l2: l2-cache0 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <1024>; // 512KiB(size)/64(line-size)=8192ways/8-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) 407000>; +}; + +/* enable thermal sensor with the correct compatible property set */ +&thermal { + compatible = "brcm,bcm2836-thermal"; + status = "okay"; +}; |