linux-kernel - Re: [PATCH] arm: rpi: Device tree modifications for U-Boot

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Message-ID: <20151008155015.GC11776@xo-6d-61-c0.localdomain>
Date:	Thu, 8 Oct 2015 17:50:15 +0200
From:	Pavel Machek <pavel@....cz>
To:	Simon Glass <sjg@...omium.org>
Cc:	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dotorg.org>,
	Stephen Warren <swarren@...dia.com>,
	Russell King <linux@....linux.org.uk>,
	Lee Jones <lee@...nel.org>, devicetree@...r.kernel.org,
	Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	linux-rpi-kernel@...ts.infradead.org,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH] arm: rpi: Device tree modifications for U-Boot

Hi!

> This updates the device tree from the kernel version to something suitable
> for U-Boot:
> 
> - Add stdout-path alias for console
> - Mark the /soc node to be available pre-relocation so that the early
> serial console works (we need the 'ranges' property to be available)
> 
> Signed-off-by: Simon Glass <sjg@...omium.org>
> ---
> 
>  arch/arm/boot/dts/bcm2835.dtsi | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> @@ -16,6 +17,7 @@
>  		#size-cells = <1>;
>  		ranges = <0x7e000000 0x20000000 0x02000000>;
>  		dma-ranges = <0x40000000 0x00000000 0x20000000>;
> +		u-boot,dm-pre-reloc;
>

Given low ammount of memory available for SPL, such stuff is going to be neccessary.

Should it have more generic name... "critical-for-early-boot" ?

Best regards,
									Pavel
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