Re: [PATCH v2 3/8] dt-bindings: sdhci-omap: Add properties for using external dma

Faiz Abbas
2019-02-18T13:41:32Z

Hi Tony,

On 16/02/19 1:37 AM, Tony Lindgren wrote:
> * Faiz Abbas <faiz_abbas@ti.com> [190215 19:18]:
>> From: Chunyan Zhang <zhang.chunyan@linaro.org>
>>
>> sdhci-omap can support both external dma controller via dmaengine
>> framework as well as ADMA which standard SD host controller
>> provides.
>
> Care to describe here also how to configure things for ADMA and
> instead of DMA? Just leave out dmas property?
>

That's correct. If dmas property is populated, then use external DMA.
Otherwise use ADMA/SDMA depending on what you read from the CAPS register.

Thanks,
Faiz