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

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Message-ID: <SJ1PR12MB6339C29CB538C4FD54B72810C0439@SJ1PR12MB6339.namprd12.prod.outlook.com>
Date:   Mon, 22 May 2023 14:57:31 +0000
From:   Akhil R <akhilrajeev@...dia.com>
To:     "christian.koenig@....com" <christian.koenig@....com>,
        "digetx@...il.com" <digetx@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "sumit.semwal@...aro.org" <sumit.semwal@...aro.org>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "wsa@...nel.org" <wsa@...nel.org>
Subject: RE: [PATCH v6 RESEND 2/2] i2c: tegra: Share same DMA channel for RX
 and TX

> 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>
> ---
>  drivers/i2c/busses/i2c-tegra.c | 69 ++++++++++------------------------
>  1 file changed, 20 insertions(+), 49 deletions(-)
> 
Hi Wolfram,

Thanks for applying the patch 1/2 of this series.
I saw that this patch is not applied currently.
Do we have any concerns on applying this? 

Regards,
Akhil