[PATCH v3 2/3] mmc: sdhci: enable tuning for DDR50

Barry Song
2015-10-04T11:55:49Z

CMD19 tuning is also available for DDR50 mode.

Signed-off-by: Weijun Yang <york.yang@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
---
drivers/mmc/host/sdhci.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 64b7fdb..2ea30fa 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1893,9 +1893,9 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
tuning_count = host->tuning_count;

/*
- * The Host Controller needs tuning only in case of SDR104 mode
- * and for SDR50 mode when Use Tuning for SDR50 is set in the
- * Capabilities register.
+ * The Host Controller needs tuning in case of SDR104 and DDR5
+ * mode, and for SDR50 mode when Use Tuning for SDR50 is set in
+ * the Capabilities register.
* If the Host Controller supports the HS200 mode then the
* tuning function has to be executed.
*/
@@ -1915,6 +1915,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
break;

case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_UHS_DDR50:
break;

case MMC_TIMING_UHS_SDR50:
--
1.9.1