On 08/06/2015 11:16 AM, Doug Anderson wrote:

Shawn,

On Wed, Aug 5, 2015 at 1:17 AM, Shawn Lin [off-list ref] wrote:

quoted

synopsys-dw-mshc supports three types of transfer mode. We add bindings
and description for how to use them at runtime. Without idmac and edmac
property, pio is the default transfer mode. Make sure that Idmac and emdac
should not be used simultaneously.

Can't you just read the HCON register?

[17:16]: DMA_INTERFACE
 00: none
 01: DW_DMA
 10: GENERIC_DMA
 11: NON-DW-DMA

If read it and get the exactly information. I think we can use that information.

Best Regards,
Jaehoon Chung