linux-kernel - Re: [PATCH 1/7] ARM: dts: exynos: Add missing memory node for Exynos5440 boards

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Message-id: <e3cdab3d-f1ef-f751-b169-e3328178b835@kernel.org>
Date:   Thu, 01 Sep 2016 11:05:59 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Javier Martinez Canillas <javier@....samsung.com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Kukjin Kim <kgene@...nel.org>,
        linux-samsung-soc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 1/7] ARM: dts: exynos: Add missing memory node for
 Exynos5440 boards

On 09/01/2016 10:43 AM, Javier Martinez Canillas wrote:
>>> --- a/arch/arm/boot/dts/exynos5440-ssdk5440.dts
>>> +++ b/arch/arm/boot/dts/exynos5440-ssdk5440.dts
>>> @@ -21,6 +21,11 @@
>>>  		bootargs = "root=/dev/sda2 rw rootwait ignore_loglevel earlyprintk no_console_suspend mem=2048M@...0000000 mem=6144M@...00000000 console=ttySAC0,115200";
>>>  	};
>>>  
>>> +	memory {
>>> +		device_type = "memory";
>>> +		reg = <0 0>;
>>> +	};
>>
>> This looks okay, but the default size and address cells won't be
>> present. Won't that be a problem?
>>
> 
> They will be present since at this point exynos5440.dtsi is still including
> exynos5440.dtsi, we are just overriding the memory node with the same values
> than skeleton.dtsi so this can be removed later in patch 7/7.

I don't get it. exynos5440.dtsi does not set size/address cells in top node.

Best regards,
Krzysztof