linux-kernel - Re: [RFT PATCH v3 27/27] arm64: apple: Add initial Apple Mac mini (M1, 2020) devicetree

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Date:   Fri, 5 Mar 2021 12:45:54 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Hector Martin <marcan@...can.st>,
        linux-arm-kernel@...ts.infradead.org
Cc:     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>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Christoph Hellwig <hch@...radead.org>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH v3 27/27] arm64: apple: Add initial Apple Mac mini
 (M1, 2020) devicetree

On 05/03/2021 12:14, Hector Martin wrote:
> On 05/03/2021 20.03, Krzysztof Kozlowski wrote:
>>> +	memory@...000000 {
>>> +		device_type = "memory";
>>> +		reg = <0x8 0 0x2 0>; /* To be filled by loader */
>>
>> Shouldn't this be 0x800000000 with ~0x80000000 length (or whatever is
>> more common)? Or did I miss some ranges?
> 
> The base model has 8GB of RAM, and RAM always starts at 0x800000000, 
> hence that reg property.

Ah, I messed up the unit addressing and number of zeros... it's OK.

Best regards,
Krzysztof