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Date:   Thu, 26 Aug 2021 14:43:26 +0200
From:   Michael Walle <michael@walle.cc>
To:     etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Cc:     "Lukas F . Hartmann" <lukas@mntre.com>,
        Marek Vasut <marek.vasut@gmail.com>,
        Lucas Stach <l.stach@pengutronix.de>,
        Russell King <linux+etnaviv@armlinux.org.uk>,
        Christian Gmeiner <christian.gmeiner@gmail.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [PATCH 3/3] drm/etnaviv: use a 32 bit mask as coherent DMA mask
In-Reply-To: <20210826121006.685257-4-michael@walle.cc>
References: <20210826121006.685257-1-michael@walle.cc>
 <20210826121006.685257-4-michael@walle.cc>
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Am 2021-08-26 14:10, schrieb Michael Walle:
> The STLB and the first command buffer (which is used to set up the 
> TLBs)
> has a 32 bit size restriction in hardware. There seems to be no way to
> specify addresses larger than 32 bit. Keep it simple and restict the
> addresses to the lower 4 GiB range for all coherent DMA memory
> allocations.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Suggested-by: Lucas Stach <l.stach@pengutronix.de>

is missing here. sorry, will add it in the next version.

-michael