diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index e1461a9..c6a1c23 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -877,6 +877,7 @@
 
 	mmc->tran_speed = freq * mult;
 
+	mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
 	mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
 
 	if (IS_SD(mmc))
@@ -907,6 +908,14 @@
 	if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
 		mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
 
+	if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
+		cmd.cmdidx = MMC_CMD_SET_DSR;
+		cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
+		cmd.resp_type = MMC_RSP_NONE;
+		if (mmc_send_cmd(mmc, &cmd, NULL))
+			printf("MMC: SET_DSR failed\n");
+	}
+
 	/* Select the card, and put it into Transfer Mode */
 	if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 		cmd.cmdidx = MMC_CMD_SELECT_CARD;
@@ -1163,6 +1172,9 @@
 
 int mmc_register(struct mmc *mmc)
 {
+	/* Setup dsr related values */
+	mmc->dsr_imp = 0;
+	mmc->dsr = 0xffffffff;
 	/* Setup the universal parts of the block interface just once */
 	mmc->block_dev.if_type = IF_TYPE_MMC;
 	mmc->block_dev.dev = cur_dev_num++;
@@ -1280,6 +1292,12 @@
 	return err;
 }
 
+int mmc_set_dsr(struct mmc *mmc, u16 val)
+{
+	mmc->dsr = val;
+	return 0;
+}
+
 /*
  * CPU and board-specific MMC initializations.  Aliased function
  * signals caller to move on