linux-kernel - Re: [PATCH] ARM: dts: bcm283x: Unify CMA configuration

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Message-Id: <20200115234050.30408-1-f.fainelli@gmail.com>
Date:   Wed, 15 Jan 2020 15:40:50 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     bcm-kernel-feedback-list@...adcom.com,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Stefan Wahren <wahrenst@....net>
Cc:     phil@...pberrypi.org, devicetree@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: bcm283x: Unify CMA configuration

On Fri, 10 Jan 2020 18:29:35 +0100, Nicolas Saenz Julienne <nsaenzjulienne@...e.de> wrote:
> With the introduction of the Raspberry Pi 4 we were forced to explicitly
> configure CMA's location, since arm64 defaults it into the ZONE_DMA32
> memory area, which is not good enough to perform DMA operations on that
> device. To bypass this limitation a dedicated CMA DT node was created,
> explicitly indicating the acceptable memory range and size.
> 
> That said, compatibility between boards is a must on the Raspberry Pi
> ecosystem so this creates a common CMA DT node so as for DT overlays to
> be able to update CMA's properties regardless of the board being used.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---

Applied to devicetree/next, thanks!
--
Florian