55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#include "bcm283x.dtsi"
|
||
|
|
#include "bcm2835-common.dtsi"
|
||
|
|
|
||
|
|
/ {
|
||
|
|
compatible = "brcm,bcm2835";
|
||
|
|
|
||
|
|
cpus {
|
||
|
|
#address-cells = <1>;
|
||
|
|
#size-cells = <0>;
|
||
|
|
|
||
|
|
cpu@0 {
|
||
|
|
device_type = "cpu";
|
||
|
|
compatible = "arm,arm1176jzf-s";
|
||
|
|
reg = <0x0>;
|
||
|
|
/* Source for d/i-cache-line-size and d/i-cache-sets
|
||
|
|
* https://developer.arm.com/documentation/ddi0301
|
||
|
|
* /h/level-one-memory-system/cache-organization?lang=en
|
||
|
|
*
|
||
|
|
* Source for d/i-cache-size
|
||
|
|
* https://forums.raspberrypi.com/viewtopic.php?t=98428
|
||
|
|
*
|
||
|
|
* NOTE: The BCM2835 has a L2 cache but it is dedicated to the GPU
|
||
|
|
* It can be shared with the CPU through fw settings,
|
||
|
|
* but this is not recommended.
|
||
|
|
*/
|
||
|
|
d-cache-size = <0x4000>;
|
||
|
|
d-cache-line-size = <16>;
|
||
|
|
d-cache-sets = <256>; // 16KiB(size)/16(line-size)=1024ways/4-way set
|
||
|
|
i-cache-size = <0x4000>;
|
||
|
|
i-cache-line-size = <16>;
|
||
|
|
i-cache-sets = <256>; // 16KiB(size)/16(line-size)=1024ways/4-way set
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
soc {
|
||
|
|
ranges = <0x7e000000 0x20000000 0x02000000>;
|
||
|
|
dma-ranges = <0x40000000 0x00000000 0x20000000>;
|
||
|
|
};
|
||
|
|
|
||
|
|
arm-pmu {
|
||
|
|
compatible = "arm,arm1176-pmu";
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
&cpu_thermal {
|
||
|
|
coefficients = <(-538) 407000>;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* enable thermal sensor with the correct compatible property set */
|
||
|
|
&thermal {
|
||
|
|
compatible = "brcm,bcm2835-thermal";
|
||
|
|
status = "okay";
|
||
|
|
};
|