mmc: cmdq: decrease the QSR polling period
Configure the controller to send the QSR at 1 clock period.
This would send SQS(CMD13) when no data transfer is in
progress. This decrease in the polling period increases the
performance of the device.
CRs-fixed: 891366
Change-Id: Ic2807c6334a778b5f0c89fb605c6923a44f7624a
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
diff --git a/drivers/mmc/host/cmdq_hci.c b/drivers/mmc/host/cmdq_hci.c
index 0fd6b8c..3082d67 100644
--- a/drivers/mmc/host/cmdq_hci.c
+++ b/drivers/mmc/host/cmdq_hci.c
@@ -356,8 +356,7 @@
cmdq_writel(cq_host, mmc->card->rca, CQSSC2);
/* send QSR at lesser intervals than the default */
- cmdq_writel(cq_host, cmdq_readl(cq_host, CQSSC1) | SEND_QSR_INTERVAL,
- CQSSC1);
+ cmdq_writel(cq_host, SEND_QSR_INTERVAL, CQSSC1);
/* enable bkops exception indication */
if (mmc_card_configured_manual_bkops(mmc->card) &&
diff --git a/drivers/mmc/host/cmdq_hci.h b/drivers/mmc/host/cmdq_hci.h
index b8a8ccd..ce6048b 100644
--- a/drivers/mmc/host/cmdq_hci.h
+++ b/drivers/mmc/host/cmdq_hci.h
@@ -78,7 +78,7 @@
* Value n means CQE would send CMD13 during the transfer of data block
* BLOCK_CNT-n
*/
-#define SEND_QSR_INTERVAL 0x70000
+#define SEND_QSR_INTERVAL 0x70001
/* send status config 2 */
#define CQSSC2 0x44