linux-kernel - Re: [PATCH 0/4] arm64: dts: apple: Add chassis-type properties

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Message-Id: <87wm1p8e1g.fsf@bloch.sibelius.xs4all.nl>
Date: Sat, 10 Jan 2026 20:26:35 +0100
From: Mark Kettenis <mark.kettenis@...all.nl>
To: Janne Grunau <j@...nau.net>
Cc: sven@...nel.org, neal@...pa.dev, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org,
	asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	j@...nau.net
Subject: Re: [PATCH 0/4] arm64: dts: apple: Add chassis-type properties

> From: Janne Grunau <j@...nau.net>
> Date: Fri, 09 Jan 2026 16:25:42 +0100
> 
> Add chassis-type properties for all Apple silicon Macs. "chassis-type"
> is used by u-boot to fill the SMBIOS "System Enclosure or Chassis Type"
> field. User space software uses this field to to determine if a device
> is an laptop. The exact use case eludes me unfortunately.
> 
> The Mac Pro uses "server" as chassis-type which is not entirely
> accurate. The tower and rack mount Mac Pro versions share the same .dts
> file and are identical except for the enclosure. I haven't found an
> obvious property in Apple's device tree to distinguish between those so
> both use "server" instead of the more accurate "tower" and "rack mount
> chassis". The latter chassis-types are not in dt-schema anyway.
> 
> Signed-off-by: Janne Grunau <j@...nau.net>

For the series:

Reviewed-by: Mark Kettenis <kettenis@...nbsd.org>

> ---
> Janne Grunau (4):
>       arm64: dts: apple: Add chassis-type property for all Macbooks
>       arm64: dts: apple: Add chassis-type property for Apple desktop devices
>       arm64: dts: apple: Add chassis-type property for Mac Pro
>       arm64: dts: apple: Add chassis-type property for Apple iMacs
> 
>  arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi | 2 ++
>  arch/arm64/boot/dts/apple/t600x-j375.dtsi      | 2 ++
>  arch/arm64/boot/dts/apple/t6022-j180d.dts      | 2 ++
>  arch/arm64/boot/dts/apple/t8103-j274.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8103-j293.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8103-j313.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8103-j456.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8103-j457.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8112-j413.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8112-j415.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8112-j473.dts       | 1 +
>  arch/arm64/boot/dts/apple/t8112-j493.dts       | 1 +
>  12 files changed, 15 insertions(+)
> ---
> base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
> change-id: 20260109-apple-dt-chassis-type-f31523a1f681
> 
> Best regards,
> -- 
> Janne Grunau <j@...nau.net>
> 
> 
>