From: Kartik Rajput <kkartik@nvidia.com>
To: "thierry.reding@gmail.com" <thierry.reding@gmail.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>,
Jon Hunter <jonathanh@nvidia.com>,
Akhil R <akhilrajeev@nvidia.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"robh@kernel.org" <robh@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"krzk+dt@kernel.org" <krzk+dt@kernel.org>,
"andi.shyti@kernel.org" <andi.shyti@kernel.org>,
"conor+dt@kernel.org" <conor+dt@kernel.org>,
"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
"digetx@gmail.com" <digetx@gmail.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>
Subject: Re: [PATCH 5/5] i2c: tegra: Do not configure DMA if not supported
Date: Wed, 15 Jan 2025 11:42:40 +0000 [thread overview]
Message-ID: <b8f1dcd2ef330bbaf5fe7c17658edc49cc7a7545.camel@nvidia.com> (raw)
In-Reply-To: <ty3ctkatywnq6ukrcgkqrzstch2k5qymjfgntnyi23riapytkg@7vzjyszmq3ml>
On Thu, 2025-01-09 at 11:33 +0100, Thierry Reding wrote:
> On Wed, Jan 08, 2025 at 04:36:20PM +0530, Kartik Rajput wrote:
> > On Tegra264, not all I2C controllers support DMA, this causes
> > failures
> > when function tegra_i2c_init_dma() is called.
>
> What exactly does it mean when you say "not all I2C controllers
> support
> DMA"? Do they not have the necessary interface to the GPC DMA or are
> there not sufficient DMA channels to support all I2C controllers?
>
> Thierry
They do not have the neccessary interface to the GPC DMA.
next prev parent reply other threads:[~2025-01-15 11:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 11:06 [PATCH 0/5] Add I2C support for Tegra264 Kartik Rajput
2025-01-08 11:06 ` [PATCH 1/5] i2c: tegra: Add HS mode support Kartik Rajput
2025-01-08 16:45 ` Thierry Reding
2025-01-15 11:40 ` Kartik Rajput
2025-01-09 12:18 ` kernel test robot
2025-01-08 11:06 ` [PATCH 2/5] dt-bindings: i2c: nvidia,tegra20-i2c: Document Tegra264 I2C Kartik Rajput
2025-01-08 16:47 ` Thierry Reding
2025-01-15 11:41 ` Kartik Rajput
2025-01-10 15:55 ` Rob Herring
2025-01-15 11:46 ` Kartik Rajput
2025-01-08 11:06 ` [PATCH 3/5] i2c: tegra: Add Tegra264 support Kartik Rajput
2025-01-09 4:43 ` Mukesh Kumar Savaliya
2025-01-09 10:24 ` Thierry Reding
2025-01-09 12:37 ` Mukesh Kumar Savaliya
2025-01-08 11:06 ` [PATCH 4/5] i2c: tegra: Add support for SW Mutex register Kartik Rajput
2025-01-08 17:01 ` Thierry Reding
2025-01-15 11:39 ` Kartik Rajput
2025-01-08 11:06 ` [PATCH 5/5] i2c: tegra: Do not configure DMA if not supported Kartik Rajput
2025-01-09 10:33 ` Thierry Reding
2025-01-15 11:42 ` Kartik Rajput [this message]
2025-01-09 10:37 ` [PATCH 0/5] Add I2C support for Tegra264 Thierry Reding
2025-01-15 11:44 ` Kartik Rajput
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