Shawn, On Wed, Aug 5, 2015 at 1:17 AM, Shawn Lin <shawn.lin at rock-chips.com> wrote: > 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
