From: Jon Hunter <jonathanh@nvidia.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 2/2] gpu: host1x: Use SMMU on Tegra124 and Tegra210
Date: Wed, 25 Mar 2020 20:48:29 +0000 [thread overview]
Message-ID: <c359bfdb-de7e-6c82-9a78-bd0ec4449172@nvidia.com> (raw)
In-Reply-To: <20200325201604.833898-2-thierry.reding@gmail.com>
On 25/03/2020 20:16, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
>
> Tegra124 and Tegra210 support addressing more than 32 bits of physical
> memory. However, since their host1x does not support the wide GATHER
> opcode, they should use the SMMU if at all possible to ensure that all
> the system memory can be used for command buffers, irrespective of
> whether or not the host1x firewall is enabled.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
> drivers/gpu/host1x/dev.c | 46 ++++++++++++++++++++++++++++++++++++----
> 1 file changed, 42 insertions(+), 4 deletions(-)
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Cheers
Jon
--
nvpublic
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next prev parent reply other threads:[~2020-03-25 20:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 20:16 [PATCH 1/2] drm/tegra: Fix SMMU support on Tegra124 and Tegra210 Thierry Reding
2020-03-25 20:16 ` [PATCH 2/2] gpu: host1x: Use SMMU " Thierry Reding
2020-03-25 20:48 ` Jon Hunter [this message]
2020-03-25 20:48 ` [PATCH 1/2] drm/tegra: Fix SMMU support " Jon Hunter
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