arm64: dts: apple: Add J615 Macbook Air (15-inch, M3, 2024)

Add minimal dts for Macbook Air (15-inch, M3, 2024).

to be squashed

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

Author: jannau

arch/arm64/boot/dts/apple/Makefile

@@ -95,3 +95,4 @@ dtb-$(CONFIG_ARCH_APPLE) += t8122-j433.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8122-j434.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8122-j504.dtb
 dtb-$(CONFIG_ARCH_APPLE) += t8122-j613.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t8122-j615.dtb

arch/arm64/boot/dts/apple/t8122-j615.dts

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple MacBook Air (15-inch, M3, 2024)
+ *
+ * target-type: J615
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+/dts-v1/;
+
+#include "t8122.dtsi"
+#include "t8122-jxxx.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "apple,j615", "apple,t8122", "apple,arm-platform";
+	model = "Apple MacBook Air (15-inch, M3, 2024)";
+
+	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";
+};