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Give 4-bit mode another chance on AMSv1 since other bugs were fixed.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27065 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tobias Diedrich 2010-06-22 21:44:42 +00:00
parent 9b8d53adfe
commit 6e45f87e0f
1 changed files with 20 additions and 0 deletions
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20
firmware/target/arm/as3525/sd-as3525.c
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@ -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