Re: [PATCH v2 09/10] arm64: dts: apple: Initial T603[124] (M3 Max and Ultra) device trees

On 7/15/26 11:11, Janne Grunau wrote:
> Contains minimal device trees for all M3 Max and Ultra Apple silicon
> devices. Those are 14-inch and 16-inch MacBook Pros with M3 Max released
> in November 2023 and Mac Studio with M3 Ultra released in 2025.
> This does not include M3 Pro since it is separate SoC and not a smaller
> variant of the M3 Max contrary to the M1 and M2 generations.
> The smaller M3 Max variant (10 performance cores) has its own chip
> variant (T6034) but is clearly the same design as T6031. Besides fewer
> CPU performance cores and GPU cores it misses also on fourth of the
> memory controllers and thus has an aggregated bus width of 384 bit
> instead of 512 bit.
> Both M3 Ultra variants (28 or 32 CPU cores) are based on T6031 judging
> by the advertised memory bandwidth of 819GB/s.
> This uses the same multi-die macros as t600x*.dtsi and t602x.dtsi to
> support M3 Max and M3 Ultra without duplicating device nodes. Since the
> M3 Pro can't use the same .dtsi files "t6031*.dtsi" are used to define
> common nodes for T6031, T6032 and T6034.
> The device trees have devices nodes for CPU cores, timer, interrupt
> controller, power states, watchdog, serial, pin controller, i2c,
> PWM based keyboard LED illumination and the boot framebuffer.
>
> Signed-off-by: Janne Grunau <[email protected]>
> ---
>   arch/arm64/boot/dts/apple/Makefile             |    5 +
>   arch/arm64/boot/dts/apple/t6031-base.dtsi      |  297 +++
>   arch/arm64/boot/dts/apple/t6031-die0.dtsi      |  197 ++
>   arch/arm64/boot/dts/apple/t6031-dieX.dtsi      |  107 ++
>   arch/arm64/boot/dts/apple/t6031-gpio-pins.dtsi |   53 +
>   arch/arm64/boot/dts/apple/t6031-j514c.dts      |   18 +
>   arch/arm64/boot/dts/apple/t6031-j516c.dts      |   18 +
>   arch/arm64/boot/dts/apple/t6031-pmgr.dtsi      | 2400 ++++++++++++++++++++++++
>   arch/arm64/boot/dts/apple/t6031.dtsi           |   48 +
>   arch/arm64/boot/dts/apple/t6032-j575d.dts      |   46 +
>   arch/arm64/boot/dts/apple/t6032.dtsi           |  416 ++++
>   arch/arm64/boot/dts/apple/t6034-j514m.dts      |   18 +
>   arch/arm64/boot/dts/apple/t6034-j516m.dts      |   18 +
>   arch/arm64/boot/dts/apple/t6034.dtsi           |   12 +
>   arch/arm64/boot/dts/apple/t603x-j514-j516.dtsi |   66 +
>   15 files changed, 3719 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/apple/Makefile b/arch/arm64/boot/dts/apple/Makefile
> index 6fc3349a5842..a22b4a8068b6 100644
> --- a/arch/arm64/boot/dts/apple/Makefile
> +++ b/arch/arm64/boot/dts/apple/Makefile
> @@ -87,6 +87,11 @@ dtb-$(CONFIG_ARCH_APPLE) += t6021-j416c.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t6020-j474s.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t6021-j475c.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t6022-j475d.dtb
> +dtb-$(CONFIG_ARCH_APPLE) += t6031-j514c.dtb
> +dtb-$(CONFIG_ARCH_APPLE) += t6031-j516c.dtb
> +dtb-$(CONFIG_ARCH_APPLE) += t6032-j575d.dtb
> +dtb-$(CONFIG_ARCH_APPLE) += t6034-j514m.dtb
> +dtb-$(CONFIG_ARCH_APPLE) += t6034-j516m.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t8112-j413.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t8112-j415.dtb
>   dtb-$(CONFIG_ARCH_APPLE) += t8112-j473.dtb
> diff --git a/arch/arm64/boot/dts/apple/t6031-base.dtsi b/arch/arm64/boot/dts/apple/t6031-base.dtsi
> new file mode 100644
> index 000000000000..0bb7373b3f06
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/t6031-base.dtsi
> @@ -0,0 +1,297 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
> +/*
> + * Nodes common for T6031, T6032 and T6034 family SoCs (M3 Max/Ultra)
> + *
> + * Other names: H15J, H15S, "Palma"
> + *
> + * Copyright The Asahi Linux Contributors
> + */
> +
> +/ {
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	cpus {
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +
> +		cpu-map {
> +			cluster0 {
> +				core0 {
> +					cpu = <&cpu_e00>;
> +				};
> +				core1 {
> +					cpu = <&cpu_e01>;
> +				};
> +				core2 {
> +					cpu = <&cpu_e02>;
> +				};
> +				core3 {
> +					cpu = <&cpu_e03>;
> +				};
> +			};
> +
> +			cluster1 {
> +				core0 {
> +					cpu = <&cpu_p00>;
> +				};
> +				core1 {
> +					cpu = <&cpu_p01>;
> +				};
> +				core2 {
> +					cpu = <&cpu_p02>;
> +				};
> +				core3 {
> +					cpu = <&cpu_p03>;
> +				};
> +				core4 {
> +					cpu = <&cpu_p04>;
> +				};
> +				core5 {
> +					cpu = <&cpu_p05>;
> +				};
> +			};
> +
> +			cluster2 {
> +				core0 {
> +					cpu = <&cpu_p10>;
> +				};
> +				core1 {
> +					cpu = <&cpu_p11>;
> +				};
> +				core2 {
> +					cpu = <&cpu_p12>;
> +				};
> +				core3 {
> +					cpu = <&cpu_p13>;
> +				};
> +				core4 {
> +					cpu = <&cpu_p14>;
> +				};
> +				core5 {
> +					cpu = <&cpu_p15>;
> +				};
> +			};
> +		};
> +
> +		cpu_e00: cpu@0 {
> +			compatible = "apple,sawtooth";
> +			device_type = "cpu";
> +			reg = <0x0 0x0>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* to be filled by loader */
> +			next-level-cache = <&l2_cache_0>;
> +			i-cache-size = <0x20000>;
> +			d-cache-size = <0x10000>;
> +		};
> +
> +		cpu_e01: cpu@1 {
> +			compatible = "apple,sawtooth";
> +			device_type = "cpu";
> +			reg = <0x0 0x1>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* to be filled by loader */
> +			next-level-cache = <&l2_cache_0>;
> +			i-cache-size = <0x20000>;
> +			d-cache-size = <0x10000>;
> +		};
> +
> +		cpu_e02: cpu@2 {
> +			compatible = "apple,sawtooth";
> +			device_type = "cpu";
> +			reg = <0x0 0x2>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* to be filled by loader */
> +			next-level-cache = <&l2_cache_0>;
> +			i-cache-size = <0x20000>;
> +			d-cache-size = <0x10000>;
> +		};
> +
> +		cpu_e03: cpu@3 {
> +			compatible = "apple,sawtooth";
> +			device_type = "cpu";
> +			reg = <0x0 0x3>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* to be filled by loader */
> +			next-level-cache = <&l2_cache_0>;
> +			i-cache-size = <0x20000>;
> +			d-cache-size = <0x10000>;
> +		};
> +
> +		cpu_p00: cpu@10100 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10100>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p01: cpu@10101 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10101>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p02: cpu@10102 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10102>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p03: cpu@10103 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10103>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p04: cpu@10104 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10104>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p05: cpu@10105 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10105>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_1>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p10: cpu@10200 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10200>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p11: cpu@10201 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10201>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p12: cpu@10202 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10202>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p13: cpu@10203 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10203>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p14: cpu@10204 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10204>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		cpu_p15: cpu@10205 {
> +			compatible = "apple,everest";
> +			device_type = "cpu";
> +			reg = <0x0 0x10205>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +			next-level-cache = <&l2_cache_2>;
> +			i-cache-size = <0x30000>;
> +			d-cache-size = <0x20000>;
> +		};
> +
> +		l2_cache_0: l2-cache-0 {
> +			compatible = "cache";
> +			cache-level = <2>;
> +			cache-unified;
> +			cache-size = <0x400000>;
> +		};
> +
> +		l2_cache_1: l2-cache-1 {
> +			compatible = "cache";
> +			cache-level = <2>;
> +			cache-unified;
> +			cache-size = <0x1000000>;
> +		};
> +
> +		l2_cache_2: l2-cache-2 {
> +			compatible = "cache";
> +			cache-level = <2>;
> +			cache-unified;
> +			cache-size = <0x1000000>;
> +		};
> +	 };
Nit: The indentation is weird here. The parenthesis close is not aligned 
with the "timer" in the next section.
> +
> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupt-parent = <&aic>;
> +		interrupt-names = "phys", "virt", "hyp-phys", "hyp-virt";
> +		interrupts = <AIC_FIQ 0 AIC_TMR_GUEST_PHYS IRQ_TYPE_LEVEL_HIGH>,
> +			     <AIC_FIQ 0 AIC_TMR_GUEST_VIRT IRQ_TYPE_LEVEL_HIGH>,
> +			     <AIC_FIQ 0 AIC_TMR_HV_PHYS IRQ_TYPE_LEVEL_HIGH>,
> +			     <AIC_FIQ 0 AIC_TMR_HV_VIRT IRQ_TYPE_LEVEL_HIGH>;
> +	};
> +
> +	clkref: clock-ref {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <24000000>;
> +		clock-output-names = "clkref";
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +	};
> +};
>
[...]
> diff --git a/arch/arm64/boot/dts/apple/t6034.dtsi b/arch/arm64/boot/dts/apple/t6034.dtsi
> new file mode 100644
> index 000000000000..aa73af9c512d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/t6034.dtsi
> @@ -0,0 +1,12 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
> +/*
> + * Apple T6034 "M3 Max" SoC
> + *
> + * Copyright The Asahi Linux Contributors
> + */
> +
> +#include "t6031.dtsi"
> +
> +/ {
> +	compatible = "apple,t6034", "apple,arm-platform";
> +};

You mentioned the reduced number of memory channels on the 14-core 
variant, but the corresponding pmgr nodes are not disabled here.


> diff --git a/arch/arm64/boot/dts/apple/t603x-j514-j516.dtsi b/arch/arm64/boot/dts/apple/t603x-j514-j516.dtsi
> new file mode 100644
> index 000000000000..517b84c183ca
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/t603x-j514-j516.dtsi
> @@ -0,0 +1,66 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
> +/*
> + * MacBook Pro (14/16-inch, 2023)
> + *
> + * This file contains the parts common to J514 and J516 devices with t6030,
> + * t6031 and t6034.
> + *
> + * target-type: J514s / J514m / J514c / J516s / J516m / J516c
> + *
> + * Copyright The Asahi Linux Contributors
> + */
> +
> +/*
> + * These models are essentially identical to the previous generations, other
> + * than the GPIO indices and using SPMI based USB Type-C port controllers.
> + */
> +
> +#include <dt-bindings/leds/common.h>
> +
> +/ {
> +	chassis-type = "laptop";
> +
> +	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 */
> +			/* Format properties will be added by loader */
> +			status = "disabled";
> +			power-domains = <&ps_disp_fe>;
> +		};
> +	};
> +
> +	memory@10000000000 {
> +		device_type = "memory";
> +		reg = <0x100 0 0x2 0>; /* To be filled by loader */
> +	};
> +
> +	led-controller {
> +		compatible = "pwm-leds";
> +		led-0 {
> +			pwms = <&fpwm0 0 40000>;
> +			function = LED_FUNCTION_KBD_BACKLIGHT;
> +			color = <LED_COLOR_ID_WHITE>;
> +			max-brightness = <255>;
> +			default-state = "keep";
> +		};
> +	};
> +};
> +
> +&serial0 {
> +	status = "okay";
> +};
> +
> +&fpwm0 {
> +	status = "okay";
> +};


Thanks!

— Yureka