Dear all, SD card takes at least 5ms to stable the output voltage at the end of the supply of 3.3v clock. Now, I have two UHS-I cards, Sandisk 16GB Extreme Pro and Toshiba 64GB. It shows the following two messages when initialization of these two cards are failed: for Sandisk 16GB Extreme Pro sdhci: Switching to 1.8V signalling voltage failed, retrying with S18R set to 0 mmc0: error -110 whilst initialising SD card for Toshiba 64GB sdhci: Switching to 1.8V signalling voltage failed, retrying with S18R set to 0 mmc0: error -84 whilst initialising SD card But, as time interval between 3.3v to 1.8v increases, the mmc subsystem can identify these cards. Is it normal to expand the time interval in sdhci_start_signal_voltage when it switches from 3.3v to 1.8v? Any suggestion is welcome. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
