mmc: sdio: Add high speed support to sdio_reset_comm()
Signed-off-by: San Mehat <san@google.com>
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 57c752b..b3b5ff4 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -929,7 +929,28 @@
goto err;
}
- mmc_set_clock(host, card->cis.max_dtr);
+ /*
+ * Switch to high-speed (if supported).
+ */
+ err = sdio_enable_hs(card);
+ if (err)
+ goto err;
+
+ /*
+ * Change to the card's maximum speed.
+ */
+ if (mmc_card_highspeed(card)) {
+ /*
+ * The SDIO specification doesn't mention how
+ * the CIS transfer speed register relates to
+ * high-speed, but it seems that 50 MHz is
+ * mandatory.
+ */
+ mmc_set_clock(host, 50000000);
+ } else {
+ mmc_set_clock(host, card->cis.max_dtr);
+ }
+
err = sdio_enable_wide(card);
if (err)
goto err;