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

[Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>]

Hi,

On Wednesday, August 31, 2016 02:14:33 PM Javier Martinez Canillas wrote:
> The skeleton.dtsi file was removed in ARM64 for different reasons as
> explained in commit ("3ebee5a2e141 arm64: dts: kill skeleton.dtsi").
> 
> These also applies to ARM and it will also allow to get rid of the
> following DTC warnings in the future:
> 
> "Node /memory has a reg or ranges property, but no unit name"
> 
> But these boards don't have a memory node defined, so removing the
> skeleton.dtsi inclusion in exynos4.dtsi will cause a change in the
> compiled DTB. Add a dummy memory node so the compiled DTB doesn't
> change if the skeleton.dtsi is removed from exynos4.dtsi.
> 
> Eventually the correct starting addresses and sizes should be used
> but I didn't find that information.
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
> ---
> 
>  arch/arm/boot/dts/exynos5440-sd5v1.dts    | 5 +++++
>  arch/arm/boot/dts/exynos5440-ssdk5440.dts | 5 +++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos5440-sd5v1.dts b/arch/arm/boot/dts/exynos5440-sd5v1.dts
> index a98501bab6fc..333db4ff373a 100644
> --- a/arch/arm/boot/dts/exynos5440-sd5v1.dts
> +++ b/arch/arm/boot/dts/exynos5440-sd5v1.dts
> @@ -20,6 +20,11 @@
>  		bootargs = "root=/dev/sda2 rw rootwait ignore_loglevel earlyprintk no_console_suspend mem=2048M@0x80000000 mem=6144M@0x100000000 console=ttySAC0,115200";
>  	};
>  
> +	memory {
> +		device_type = "memory";
> +		reg = <0 0>;
> +	};

I think that this node deserves a FIXME comment.

> +
>  	fixed-rate-clocks {
>  		xtal {
>  			compatible = "samsung,clock-xtal";
> diff --git a/arch/arm/boot/dts/exynos5440-ssdk5440.dts b/arch/arm/boot/dts/exynos5440-ssdk5440.dts
> index 6a0d802e87c8..82fea6f94704 100644
> --- 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@0x80000000 mem=6144M@0x100000000 console=ttySAC0,115200";
>  	};
>  
> +	memory {
> +		device_type = "memory";
> +		reg = <0 0>;
> +	};

ditto

>  	fixed-rate-clocks {
>  		xtal {
>  			compatible = "samsung,clock-xtal";
> 

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics