1 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
new file mode 100644
index 000000000..1c90e5a44
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "bcm283x.dtsi"
+#include "bcm2835-common.dtsi"
+#include "bcm2835-rpi-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";
+};