linux-kernel - Re: [PATCH v2 25/25] arm64: apple: Add initial Mac Mini 2020 (M1) devicetree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20210215192906.7k3unuhph5wnkj5g@kozik-lap>
Date:   Mon, 15 Feb 2021 20:29:06 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Hector Martin <marcan@...can.st>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Marc Zyngier <maz@...nel.org>, Rob Herring <robh@...nel.org>,
        Arnd Bergmann <arnd@...nel.org>,
        Olof Johansson <olof@...om.net>,
        Mark Kettenis <mark.kettenis@...all.nl>,
        Tony Lindgren <tony@...mide.com>,
        Mohamed Mediouni <mohamed.mediouni@...amail.com>,
        Stan Skowronek <stan@...ellium.com>,
        Alexander Graf <graf@...zon.com>,
        Will Deacon <will@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 25/25] arm64: apple: Add initial Mac Mini 2020 (M1)
 devicetree

On Mon, Feb 15, 2021 at 09:17:13PM +0900, Hector Martin wrote:
> This currently supports:
> 
> * SMP (via spin-tables)
> * AIC IRQs
> * Serial (with earlycon)
> * Framebuffer
> 
> A number of properties are dynamic, and based on system firmware
> decisions that vary from version to version. These are expected
> to be filled in by the loader.
> 
> Signed-off-by: Hector Martin <marcan@...can.st>
> ---
>  MAINTAINERS                              |   1 +
>  arch/arm64/boot/dts/Makefile             |   1 +
>  arch/arm64/boot/dts/apple/Makefile       |   2 +
>  arch/arm64/boot/dts/apple/apple-j274.dts |  41 ++++++++
>  arch/arm64/boot/dts/apple/apple-m1.dtsi  | 124 +++++++++++++++++++++++
>  5 files changed, 169 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/apple/Makefile
>  create mode 100644 arch/arm64/boot/dts/apple/apple-j274.dts
>  create mode 100644 arch/arm64/boot/dts/apple/apple-m1.dtsi
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a8f258fbb5f1..87db1c947f45 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1635,6 +1635,7 @@ C:	irc://chat.freenode.net/asahi-dev
>  T:	git https://github.com/AsahiLinux/linux.git
>  F:	Documentation/devicetree/bindings/arm/apple.yaml
>  F:	Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
> +F:	arch/arm64/boot/dts/apple/
>  F:	arch/arm64/include/asm/sysreg_apple.h
>  F:	drivers/irqchip/irq-apple-aic.c
>  F:	include/dt-bindings/interrupt-controller/apple-aic.h
> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
> index 9b1170658d60..64f055d94948 100644
> --- a/arch/arm64/boot/dts/Makefile
> +++ b/arch/arm64/boot/dts/Makefile
> @@ -6,6 +6,7 @@ subdir-y += amazon
>  subdir-y += amd
>  subdir-y += amlogic
>  subdir-y += apm
> +subdir-y += apple
>  subdir-y += arm
>  subdir-y += bitmain
>  subdir-y += broadcom
> diff --git a/arch/arm64/boot/dts/apple/Makefile b/arch/arm64/boot/dts/apple/Makefile
> new file mode 100644
> index 000000000000..ec03c474efd4
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +dtb-$(CONFIG_ARCH_APPLE) += apple-j274.dtb
> diff --git a/arch/arm64/boot/dts/apple/apple-j274.dts b/arch/arm64/boot/dts/apple/apple-j274.dts
> new file mode 100644
> index 000000000000..9a1be91a2cf0
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/apple-j274.dts
> @@ -0,0 +1,41 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR MIT

() around licenses, so:
(GPL-2.0+ OR MIT)

> +/*
> + * Copyright The Asahi Linux Contributors
> + */
> +
> +/dts-v1/;
> +
> +#include "apple-m1.dtsi"
> +
> +/ {
> +	compatible = "apple,j274", "apple,m1", "apple,arm-platform";
> +	model = "Apple Mac Mini M1 2020";
> +
> +	aliases {
> +		serial0 = &serial0;
> +	};
> +
> +	chosen {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		stdout-path = "serial0:1500000";
> +
> +		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";
> +		};
> +	};
> +
> +	memory@...000000 {
> +		device_type = "memory";
> +		reg = <0 0 0 0>; /* To be filled by loader */

dtc and dtschema might complain, so could you set here fake memory
address 0x800000000? Would that work for your bootloader?

> +	};
> +};
> +
> +&serial0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/apple/apple-m1.dtsi b/arch/arm64/boot/dts/apple/apple-m1.dtsi
> new file mode 100644
> index 000000000000..45c87771b057
> --- /dev/null
> +++ b/arch/arm64/boot/dts/apple/apple-m1.dtsi
> @@ -0,0 +1,124 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
> +/*
> + * Copyright The Asahi Linux Contributors
> + */
> +
> +#include <dt-bindings/interrupt-controller/apple-aic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> +	compatible = "apple,m1", "apple,arm-platform";
> +
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	cpus {
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +
> +		cpu0: cpu@0 {
> +			compatible = "apple,icestorm";
> +			device_type = "cpu";
> +			reg = <0x0 0x0>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0 0>; /* To be filled by loader */
> +		};

New line after every device node, please.

With this minor changes, fine for me:
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof