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path: root/drivers/mmc/host/sdhci-pci-gli.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-pci-gli.c')
-rw-r--r--drivers/mmc/host/sdhci-pci-gli.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
index 592d79082f58..061618aa247f 100644
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -627,8 +627,13 @@ static void sdhci_gli_voltage_switch(struct sdhci_host *host)
*
* Wait 5ms after set 1.8V signal enable in Host Control 2 register
* to ensure 1.8V signal enable bit is set by GL9750/GL9755.
+ *
+ * ...however, the controller in the NUC10i3FNK4 (a 9755) requires
+ * slightly longer than 5ms before the control register reports that
+ * 1.8V is ready, and far longer still before the card will actually
+ * work reliably.
*/
- usleep_range(5000, 5500);
+ usleep_range(100000, 110000);
}
static void sdhci_gl9750_reset(struct sdhci_host *host, u8 mask)