linux-kernel - Re: [PATCH v6 3/5] arm64: dts: exynos: add initial support for Samsung Galaxy J7 Prime

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Message-ID: <298d8c1f-40ca-4377-a7a5-69f81989d7ea@kernel.org>
Date: Thu, 1 May 2025 12:13:21 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Kaustabh Chakraborty <kauschluss@...root.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>,
 Kees Cook <kees@...nel.org>, Tony Luck <tony.luck@...el.com>,
 "Guilherme G. Piccoli" <gpiccoli@...lia.com>
Cc: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v6 3/5] arm64: dts: exynos: add initial support for
 Samsung Galaxy J7 Prime

On 13/04/2025 20:58, Kaustabh Chakraborty wrote:
> +		key-volup {
> +			label = "Volume Up Key";
> +			gpios = <&gpa2 0 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_VOLUMEUP>;
> +		};
> +	};
> +
> +	memory@...00000 {
> +		device_type = "memory";
> +		reg = <0x0 0x40000000 0x3e400000>;
> +	};
> +
> +	memory@...00000 {

Why are these two separate device nodes, instead of one for two ranges?
Does device has somehow two independent memory controllers?

Best regards,
Krzysztof