linux-kernel - Re: [PATCH v6 RESEND 2/2] i2c: tegra: Share same DMA channel for RX and TX

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Date:   Mon, 5 Jun 2023 10:21:13 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Akhil R <akhilrajeev@...dia.com>
Cc:     christian.koenig@....com, digetx@...il.com, jonathanh@...dia.com,
        ldewangan@...dia.com, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        sumit.semwal@...aro.org, thierry.reding@...il.com
Subject: Re: [PATCH v6 RESEND 2/2] i2c: tegra: Share same DMA channel for RX
 and TX

On Thu, Apr 27, 2023 at 06:09:15PM +0530, 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@...dia.com>
> Acked-by: Thierry Reding <treding@...dia.com>

Applied to for-next, thanks!

No, there wasn't an issue with this patch. I just needed to make sure
patch 1 (which was for-current material) landed upstream to avoid merge
conflicts.


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