From: Jon Hunter <jonathanh@nvidia.com>
To: Akhil R <akhilrajeev@nvidia.com>,
christian.koenig@amd.com, digetx@gmail.com, ldewangan@nvidia.com,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-tegra@vger.kernel.org, sumit.semwal@linaro.org,
thierry.reding@gmail.com, wsa@kernel.org
Subject: Re: [PATCH v3] i2c: tegra: Share same DMA channel for RX and TX
Date: Wed, 22 Mar 2023 11:07:15 +0000 [thread overview]
Message-ID: <db870e74-9d97-740a-9829-5fafc0bb0559@nvidia.com> (raw)
In-Reply-To: <20230322102413.52886-1-akhilrajeev@nvidia.com>
On 22/03/2023 10:24, Akhil R wrote:
> Allocate only one DMA channel for I2C and share it for both TX and RX
> instead of using two different DMA hardware channels with the same
> slave ID. Since I2C supports only half duplex, there is no impact on
> perf with this.
>
> Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Just to confirm. This impacts all Tegra devices from Tegra20 to the
latest. Does this work for all Tegra and the different DMA controllers
that they have?
Thanks
Jon
--
nvpublic
next prev parent reply other threads:[~2023-03-22 11:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-22 10:24 [PATCH v3] i2c: tegra: Share same DMA channel for RX and TX Akhil R
2023-03-22 11:07 ` Jon Hunter [this message]
2023-03-22 12:00 ` Akhil R
2023-03-22 13:42 ` Jon Hunter
2023-03-23 9:26 ` Akhil R
2023-03-23 9:50 ` Thierry Reding
2023-03-23 12:16 ` Akhil R
2023-03-23 13:52 ` Thierry Reding
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