linux-kernel - Re: [PATCH 19/21] arm64: dts: adi: sc598: add device tree

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Message-Id: <00860eb3-8c88-45d3-84f5-5f8f0f03c28c@app.fastmail.com>
Date: Fri, 13 Sep 2024 08:05:31 +0000
From: "Arnd Bergmann" <arnd@...db.de>
To: arturs.artamonovs@...log.com, "Catalin Marinas" <catalin.marinas@....com>,
 "Will Deacon" <will@...nel.org>, "Greg Malysa" <greg.malysa@...esys.com>,
 "Philipp Zabel" <p.zabel@...gutronix.de>, "Rob Herring" <robh@...nel.org>,
 "Krzysztof Kozlowski" <krzk+dt@...nel.org>,
 "Conor Dooley" <conor+dt@...nel.org>,
 "Utsav Agarwal" <Utsav.Agarwal@...log.com>,
 "Michael Turquette" <mturquette@...libre.com>,
 "Stephen Boyd" <sboyd@...nel.org>,
 "Linus Walleij" <linus.walleij@...aro.org>,
 "Bartosz Golaszewski" <brgl@...ev.pl>,
 "Thomas Gleixner" <tglx@...utronix.de>, "Andi Shyti" <andi.shyti@...nel.org>,
 "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
 "Jiri Slaby" <jirislaby@...nel.org>, "Olof Johansson" <olof@...om.net>,
 soc@...nel.org
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
 "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
 linux-i2c@...r.kernel.org, linux-serial@...r.kernel.org,
 adsp-linux@...log.com,
 "Nathan Barrett-Morrison" <nathan.morrison@...esys.com>
Subject: Re: [PATCH 19/21] arm64: dts: adi: sc598: add device tree

On Thu, Sep 12, 2024, at 18:25, Arturs Artamonovs via B4 Relay wrote:
> +/ {
> +	chosen {
> +		stdout-path = &uart1;
> +		bootargs = "earlycon=adi_uart,0x31003000 console=ttySC0,115200 
> mem=224M";
> +	};

You should not need the mem= and earlycon= arguments, as that data
is already part of the stdout-path property and the memory node.

> +	aliases {
> +		serial0 = &uart0;
> +		serial2 = &uart2;
> +		serial3 = &uart3;
> +	};

The aliases are board specific, please only list the ones
that are actually enabled and wired on on a particular
board, and make the aliases match the labels on the board
rather than the internal components of hte chip.

> +	cpus {
> +		#address-cells = <0x2>;
> +		#size-cells = <0x0>;
> +
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			reg = <0x0 0x0>;
> +			enable-method = "spin-table";
> +			cpu-release-addr = <0x0 0xdeadbeef>;

Is that the actual address? It looks like some placeholder
that should not have been here.

       Arnd