From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/arm/boot/dts/bcm2836.dtsi | 142 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 arch/arm/boot/dts/bcm2836.dtsi

(limited to 'arch/arm/boot/dts/bcm2836.dtsi')

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";
+};
-- 
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