diff options
Diffstat (limited to 'arch/arm/boot/dts/broadcom/bcm2835.dtsi')
-rw-r--r-- | arch/arm/boot/dts/broadcom/bcm2835.dtsi | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/broadcom/bcm2835.dtsi b/arch/arm/boot/dts/broadcom/bcm2835.dtsi new file mode 100644 index 0000000000..15cb331feb --- /dev/null +++ b/arch/arm/boot/dts/broadcom/bcm2835.dtsi @@ -0,0 +1,54 @@ +// 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"; +}; |