1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index bd7bacc950dc..2c7c83f832d2 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -98,10 +98,11 @@ fail:
         return ret;
 }
 
-static int sdio_read_cccr(struct mmc_card *card)
+static int sdio_read_cccr(struct mmc_card *card, u32 ocr)
 {
         int ret;
         int cccr_vsn;
+        int uhs = ocr & R4_18V_PRESENT;
         unsigned char data;
         unsigned char speed;
 
@@ -149,7 +150,7 @@ static int sdio_read_cccr(struct mmc_card *card)
                 card->scr.sda_spec3 = 0;
                 card->sw_caps.sd3_bus_mode = 0;
                 card->sw_caps.sd3_drv_type = 0;
-                if (cccr_vsn >= SDIO_CCCR_REV_3_00) {
+                if (cccr_vsn >= SDIO_CCCR_REV_3_00 && uhs) {
                         card->scr.sda_spec3 = 1;
                         ret = mmc_io_rw_direct(card, 0, 0,
                                 SDIO_CCCR_UHS, 0, &data);
@@ -584,6 +585,9 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
          * Inform the card of the voltage
          */
         if (!powered_resume) {
+                /* The initialization should be done at 3.3 V I/O voltage. */
+                mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
+
                 err = mmc_send_io_op_cond(host, host->ocr, &ocr);
                 if (err)
                         goto err;
@@ -712,7 +716,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
         /*
          * Read the common registers.
          */
-        err = sdio_read_cccr(card);
+        err = sdio_read_cccr(card, ocr);
         if (err)
                 goto remove;
 
@@ -995,6 +999,11 @@ static int mmc_sdio_power_restore(struct mmc_host *host)
          * With these steps taken, mmc_select_voltage() is also required to
          * restore the correct voltage setting of the card.
          */
+
+        /* The initialization should be done at 3.3 V I/O voltage. */
+        if (!mmc_card_keep_power(host))
+                mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
+
         sdio_reset(host);
         mmc_go_idle(host);
         mmc_send_if_cond(host, host->ocr_avail);