arm64: dts: apple: Initial t8122 (M3) device tree

Contains a minimal device tree for t8122-j504 (Macbook Pro (14-inch, M3,
2023)) with CPU cores, interrupt controller, power states, watchdog,
serial, pin controller, i2c, PWM based keyboard LED illumination and the
boot framebuffer.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

arch/arm64/boot/dts/apple/Makefile

@@ -91,3 +91,6 @@ dtb-$(CONFIG_ARCH_APPLE) += t8112-j413.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8112-j415.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8112-j473.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8112-j493.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t8122-j433.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t8122-j434.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t8122-j504.dtb

arch/arm64/boot/dts/apple/t8122-j433.dts

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple iMac (24-inch, 2x USB-C, M3, 2023)
+ *
+ * target-type: J433
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+/dts-v1/;
+
+#include "t8122.dtsi"
+#include "t8122-usbpd-i2c.dtsi"
+#include "t8122-jxxx.dtsi"
+
+/ {
+	compatible = "apple,j433", "apple,t8122", "apple,arm-platform";
+	model = "Apple iMac (24-inch, 2x USB-C, M3, 2023)";
+};
+
+

arch/arm64/boot/dts/apple/t8122-j434.dts

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple iMac (24-inch, 4x USB-C, M3, 2023)
+ *
+ * target-type: J434
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+/dts-v1/;
+
+#include "t8122.dtsi"
+#include "t8122-usbpd-i2c.dtsi"
+#include "t8122-jxxx.dtsi"
+
+/ {
+	compatible = "apple,j434", "apple,t8122", "apple,arm-platform";
+	model = "Apple iMac (24-inch, 4x USB-C, M3, 2023)";
+};
+
+

arch/arm64/boot/dts/apple/t8122-j504.dts

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple MacBook Pro (14-inch, M3, 2023)
+ *
+ * target-type: J504
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+/dts-v1/;
+
+#include "t8122.dtsi"
+#include "t8122-usbpd-i2c.dtsi"
+#include "t8122-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "apple,j504", "apple,t8122", "apple,arm-platform";
+	model = "Apple MacBook Pro (14-inch, M3, 2023)";
+
+	led-controller {
+		compatible = "pwm-leds";
+		led-0 {
+			pwms = <&fpwm1 0 40000>;
+			label = "kbd_backlight";
+			function = LED_FUNCTION_KBD_BACKLIGHT;
+			color = <LED_COLOR_ID_WHITE>;
+			max-brightness = <255>;
+			default-state = "keep";
+		};
+	};
+};
+
+&fpwm1 {
+	status = "okay";
+};
+

arch/arm64/boot/dts/apple/t8122-jxxx.dtsi

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple M3 MacBook Air/Pro and iMac (M3, 2023/2024)
+ *
+ * This file contains parts common to all Apple M3 devices using the t8122.
+ *
+ * target-type: J433, J434, J504, J613, J615
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+/ {
+	aliases {
+		serial0 = &serial0;
+	};
+
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		stdout-path = "serial0";
+
+		framebuffer0: framebuffer@0 {
+			compatible = "apple,simple-framebuffer", "simple-framebuffer";
+			reg = <0 0 0 0>; /* To be filled by loader */
+			power-domains = <&ps_disp_cpu>, <&ps_dptx_ext_phy>;
+			/* Format properties will be added by loader */
+			status = "disabled";
+		};
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		/* To be filled by loader */
+	};
+
+	memory@800000000 {
+		device_type = "memory";
+		reg = <0x8 0 0x2 0>; /* To be filled by loader */
+	};
+};
+
+&serial0 {
+	status = "okay";
+};