linux-kernel - Re: [PATCH v2 16/16] arm64: dts: apple: t8112: Initial t8112 (M2) device trees

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Message-Id: <30ac9cb8-075b-47df-a459-e6c0bfb7853a@app.fastmail.com>
Date:   Sun, 19 Feb 2023 14:23:47 +0100
From:   "Sven Peter" <sven@...npeter.dev>
To:     "Janne Grunau" <j@...nau.net>
Cc:     "Hector Martin" <marcan@...can.st>,
        "Alyssa Rosenzweig" <alyssa@...enzweig.io>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Mark Kettenis" <kettenis@...nbsd.org>, asahi@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 16/16] arm64: dts: apple: t8112: Initial t8112 (M2) device trees



On Sun, Feb 19, 2023, at 14:22, Janne Grunau wrote:
> On 2023-02-19 13:36:22 +0100, Sven Peter wrote:
>> Hi,
>> 
>> 
>> On Tue, Feb 14, 2023, at 12:03, Janne Grunau wrote:
>> > From: Hector Martin <marcan@...can.st>
>> >
>> > This adds device trees for the following devices:
>> >  - Macbook Air (M2, 2022)
>> >  - Macbook Pro 13" (M2, 2022)
>> >  - Mac mini (M2, 2023)
>> >
>> > Signed-off-by: Hector Martin <marcan@...can.st>
>> > Co-developed-by: Janne Grunau <j@...nau.net>
>> > Signed-off-by: Janne Grunau <j@...nau.net>
>> > ---
>> >  arch/arm64/boot/dts/apple/Makefile        |    3 +
>> >  arch/arm64/boot/dts/apple/t8112-j413.dts  |   63 ++
>> >  arch/arm64/boot/dts/apple/t8112-j473.dts  |   54 ++
>> >  arch/arm64/boot/dts/apple/t8112-j493.dts  |   52 ++
>> >  arch/arm64/boot/dts/apple/t8112-jxxx.dtsi |   81 ++
>> >  arch/arm64/boot/dts/apple/t8112-pmgr.dtsi | 1141 +++++++++++++++++++++++++++++
>> >  arch/arm64/boot/dts/apple/t8112.dtsi      |  912 +++++++++++++++++++++++
>> >  7 files changed, 2306 insertions(+)
>> >
>> > diff --git a/arch/arm64/boot/dts/apple/Makefile 
>> > b/arch/arm64/boot/dts/apple/Makefile
>> > index 5a7506ff5ea3..aec5e29cdfb7 100644
>> > --- a/arch/arm64/boot/dts/apple/Makefile
>> > +++ b/arch/arm64/boot/dts/apple/Makefile
>> > @@ -10,3 +10,6 @@ dtb-$(CONFIG_ARCH_APPLE) += t6000-j316s.dtb
>> >  dtb-$(CONFIG_ARCH_APPLE) += t6001-j316c.dtb
>> >  dtb-$(CONFIG_ARCH_APPLE) += t6001-j375c.dtb
>> >  dtb-$(CONFIG_ARCH_APPLE) += t6002-j375d.dtb
>> > +dtb-$(CONFIG_ARCH_APPLE) += t8112-j413.dtb
>> > +dtb-$(CONFIG_ARCH_APPLE) += t8112-j473.dtb
>> > +dtb-$(CONFIG_ARCH_APPLE) += t8112-j493.dtb
>> > diff --git a/arch/arm64/boot/dts/apple/t8112-j413.dts 
>> > b/arch/arm64/boot/dts/apple/t8112-j413.dts
>> > new file mode 100644
>> > index 000000000000..9e758edeaa82
>> > --- /dev/null
>> > +++ b/arch/arm64/boot/dts/apple/t8112-j413.dts
>> > @@ -0,0 +1,63 @@
>> > +// SPDX-License-Identifier: GPL-2.0+ OR MIT
>> > +/*
>> > + * Apple MacBook Air (M2, 2022)
>> > + *
>> > + * target-type: J413
>> > + *
>> > + * Copyright The Asahi Linux Contributors
>> > + */
>> > +
>> > +/dts-v1/;
>> > +
>> > +#include "t8112.dtsi"
>> > +#include "t8112-jxxx.dtsi"
>> > +
>> > +/ {
>> > +	compatible = "apple,j413", "apple,t8112", "apple,arm-platform";
>> > +	model = "Apple MacBook Air (13-inch, M2, 2022)";
>> > +
>> > +	aliases {
>> > +		bluetooth0 = &bluetooth0;
>> > +		wifi0 = &wifi0;
>> > +	};
>> > +};
>> > +
>> > +/*
>> > + * Force the bus number assignments so that we can declare some of the
>> > + * on-board devices and properties that are populated by the bootloader
>> > + * (such as MAC addresses).
>> > + */
>> > +&port00 {
>> > +	bus-range = <1 1>;
>> > +	wifi0: wifi@0,0 {
>> > +		compatible = "pci14e4,4433";
>> 
>> I'm not sure how these pci compatibles are usually handled. Do they have to
>> be added to the dt-bindings Documentation as well or is it fine to just have them
>> here since they're not really used to match anything?
>
> I suppose they have to be added (at least for dtb validation) but 
> "pci14e4,4433" is already in net/wireless/brcm,bcm4329-fmac.yaml.  Added 
> via e2e37224e8b3 ("dt-bindings: net: bcm4329-fmac: Add Apple properties 
> & chips").

Oh, true, I somehow missed that.

Best,

Sven