diff --git a/bsp/at91sam9260/at91_mci.c b/bsp/at91sam9260/at91_mci.c
index b9c2611f3610fbfe736f0c32b0fb781488b5e109..39fd364f11818e98e767e987485372e46ee77db2 100755
--- a/bsp/at91sam9260/at91_mci.c
+++ b/bsp/at91sam9260/at91_mci.c
@@ -340,7 +340,7 @@ static void at91_mci_send_command(struct at91_mci *mci, struct rt_mmcsd_cmd *cmd
 				 * Handle a read
 				 */
 
-				mmu_invalidate_dcache(data->buf, data->blksize*data->blks);
+				mmu_invalidate_dcache((rt_uint32_t)data->buf, data->blksize*data->blks);
 				at91_mci_init_dma_read(mci);
 				ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */;
 			}
@@ -367,14 +367,14 @@ static void at91_mci_send_command(struct at91_mci *mci, struct rt_mmcsd_cmd *cmd
 					}
 					rt_memset(mci->buf, 0, 12);
 					rt_memcpy(mci->buf, data->buf, length);
-					mmu_clean_dcache(mci->buf, length);
+					mmu_clean_dcache((rt_uint32_t)mci->buf, length);
 					at91_mci_write(AT91_PDC_TPR, (rt_uint32_t)(mci->buf));
 					at91_mci_write(AT91_PDC_TCR, (data->blksize & 0x3) ?
 							length : length / 4);
 				}
 				else
 				{
-					mmu_clean_dcache(data->buf, data->blksize*data->blks);
+					mmu_clean_dcache((rt_uint32_t)data->buf, data->blksize*data->blks);
 					at91_mci_write(AT91_PDC_TPR, (rt_uint32_t)(data->buf));
 					at91_mci_write(AT91_PDC_TCR, (data->blksize & 0x3) ?
 							length : length / 4);
@@ -848,7 +848,8 @@ rt_int32_t at91_mci_init(void)
 	host->freq_min = 375000;
 	host->freq_max = 25000000;
 	host->valid_ocr = VDD_32_33 | VDD_33_34;
-	host->flags = MMCSD_BUSWIDTH_4 | MMCSD_MUTBLKWRITE;
+	host->flags = MMCSD_BUSWIDTH_4 | MMCSD_MUTBLKWRITE | \
+				MMCSD_SUP_HIGHSPEED | MMCSD_SUP_SDIO_IRQ;
 	host->max_seg_size = 65535;
 	host->max_dma_segs = 2;
 	host->max_blk_size = 512;