From: Wolfram Sang <wsa@kernel.org>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Dmitry Osipenko <digetx@gmail.com>,
Jon Hunter <jonathanh@nvidia.com>,
linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org,
Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH] i2c: tegra: Allocate DMA memory for DMA engine
Date: Tue, 1 Nov 2022 13:38:36 +0100 [thread overview]
Message-ID: <Y2ETTIxyR3xaBWXT@shikoro> (raw)
In-Reply-To: <20221020143933.1951609-1-thierry.reding@gmail.com>
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On Thu, Oct 20, 2022 at 04:39:33PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
>
> When the I2C controllers are running in DMA mode, it is the DMA engine
> that performs the memory accesses rather than the I2C controller. Pass
> the DMA engine's struct device pointer to the DMA API to make sure the
> correct DMA operations are used.
>
> This fixes an issue where the DMA engine's SMMU stream ID needs to be
> misleadingly set for the I2C controllers in device tree.
>
> Suggested-by: Robin Murphy <robin.murphy@arm.com>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
Applied to for-current, so you can work on the next steps on top of this
soon. Thanks!
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prev parent reply other threads:[~2022-11-01 12:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 14:39 [PATCH] i2c: tegra: Allocate DMA memory for DMA engine Thierry Reding
2022-10-20 15:14 ` Robin Murphy
2022-10-20 16:07 ` Thierry Reding
2022-11-01 12:38 ` Wolfram Sang [this message]
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