From: Adrian Hunter <adrian.hunter@intel.com>
To: Chunyan Zhang <zhang.chunyan@linaro.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Faiz Abbas <faiz_abbas@ti.com>
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Arnd Bergmann <arnd@arndb.de>, Mark Brown <broonie@kernel.org>,
Kishon Vijay Abraham I <kishon@ti.com>,
Sekhar Nori <nsekhar@ti.com>,
Chunyan Zhang <zhang.lyra@gmail.com>
Subject: Re: [PATCH V4 1/3] mmc: sdhci: add support for using external DMA devices
Date: Thu, 27 Dec 2018 09:42:56 +0200 [thread overview]
Message-ID: <0e683aef-383c-8200-0059-44a9abb654b8@intel.com> (raw)
In-Reply-To: <1544519572-21921-2-git-send-email-zhang.chunyan@linaro.org>
On 11/12/18 11:12 AM, Chunyan Zhang wrote:
> Some standard SD host controllers can support both external dma
> controllers as well as ADMA/SDMA in which the SD host controller
> acts as DMA master. TI's omap controller is the case as an example.
>
> Currently the generic SDHCI code supports ADMA/SDMA integrated in
> the host controller but does not have any support for external DMA
> controllers implemented using dmaengine, meaning that custom code is
> needed for any systems that use an external DMA controller with SDHCI.
>
> Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
FYI, I am waiting on successful testing before reviewing these patches again.
next prev parent reply other threads:[~2018-12-27 7:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 9:12 [PATCH V4 0/3] Add support for using external dma in SDHCI Chunyan Zhang
2018-12-11 9:12 ` [PATCH V4 1/3] mmc: sdhci: add support for using external DMA devices Chunyan Zhang
2018-12-13 12:07 ` Faiz Abbas
2018-12-27 7:42 ` Adrian Hunter [this message]
2018-12-27 8:02 ` Chunyan Zhang
2019-01-02 8:26 ` Faiz Abbas
2018-12-11 9:12 ` [PATCH V4 2/3] mmc: sdhci-omap: Add using external dma Chunyan Zhang
2018-12-11 9:12 ` [PATCH V4 3/3] dt-bindings: sdhci-omap: Add example for " Chunyan Zhang
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