Add pre_req and post_req support to improve performance.
Inspired by a patch in the BSP by Masaharu Hayakawa.
+/* + * renesas_sdhi_internal_dmac_map() will be called with two difference
"two different"?
+ /* This DMAC cannot handle if buffer is not 128-bytes alignment */
"aligned"?
Best regards, Pavel -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
