diff options
| -rw-r--r-- | firmware/target/arm/as3525/sd-as3525.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/firmware/target/arm/as3525/sd-as3525.c b/firmware/target/arm/as3525/sd-as3525.c index 9e55c16..02b0d72 100644 --- a/firmware/target/arm/as3525/sd-as3525.c +++ b/firmware/target/arm/as3525/sd-as3525.c @@ -363,6 +363,26 @@ static int sd_init_card(const int drive) return -10; mci_delay(); +#ifndef BOOTLOADER + /* Switch to to 4 bit widebus mode */ + if(sd_wait_for_tran_state(drive) < 0) + return -11; + /* CMD55 */ /* Response is requested due to timing issue */ + if(!send_cmd(drive, SD_APP_CMD, card_info[drive].rca, MCI_ARG|MCI_RESP, &response)) + return -14; + /* ACMD42 */ + if(!send_cmd(drive, SD_SET_CLR_CARD_DETECT, 0, MCI_ARG|MCI_RESP, &response)) + return -15; + /* CMD55 */ /* Response is requested due to timing issue */ + if(!send_cmd(drive, SD_APP_CMD, card_info[drive].rca, MCI_ARG|MCI_RESP, &response)) + return -12; + /* ACMD6 */ + if(!send_cmd(drive, SD_SET_BUS_WIDTH, 2, MCI_ARG|MCI_RESP, &response)) + return -13; + /* Now that card is widebus make controller aware */ + MCI_CLOCK(drive) |= MCI_CLOCK_WIDEBUS; +#endif + /* * enable bank switching * without issuing this command, we only have access to 1/4 of the blocks |