diff options
author | Ulf Hansson <ulf.hansson@stericsson.com> | 2010-07-02 13:47:39 +0200 |
---|---|---|
committer | Michael BRANDT <michael.brandt@stericsson.com> | 2010-08-11 10:53:36 +0200 |
commit | 33a2e90bf491f13a4546d09a6105582c0ba7f313 (patch) | |
tree | b986e40cefe66056013a73977976b1fa38b334c4 /board/st/u8500/init_mmc.h | |
parent | 415211fa4c850467b3e45b7cdb2405ac018dec77 (diff) |
Replace MMC/SD driver to fit new framework.
IR265772: MMC driver does not detect SDHC cards.
IR254201: Restructure MMC/SD driver for U8500 board according to the
block device framework in mainline U-Boot.
Changes to mmc framework:
- Multi Block Read support in mmc framework.
- Wrap Multi Block Write/Read to be able to adopt for large transaction.
- Removed incorrect check in EXT CSD for high capacity MMC.
- Corrected check for high capacity SD cards.
- Set MMC buswidth to 8, prio of using 4.
Known limitations/bugs in mmc framework:
- High capacity MMC, will likely not get the correct density.
- High speed is set, whether or not the host supports it or not.
board/st/u8500/mmc_utils:
IMPORTANT FOR DEVELOPERS:
- Removed unessary U-Boot commands which is already supported in
cmd_fat.
- mmc_read_cmd_file: Read command.txt into bootcmd env from FAT FS in
SD card.
- write_partition_block: Writes the MBR if it is not already written.
board/st/u8500/mmc_host[c.h]:
- Implements the entire MMC/SD host driver for the PL180 block.
- There is still room for optimization:
Increase CLK-speed.
Use high-speed for SD cards.
Is GPIO setup correctly for both cards an eMMC.
EarlyDrop support not fully tested.
Dynamically turn on voltage/clocks to SD, not always.
More...
Note:
- Increased read/write performance for eMMC, to around 5.4 MB/s for
sequential read/write. Earlier measurements was 3.5 MB/s for read and
2.6 MB/s for write.
ST-Ericsson ID: ER265772, CR267996, ER267993
Change-Id: I921102edbde761407ff5ad476d1bb99f5dc7a2ef
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2288
Reviewed-by: Michael BRANDT <michael.brandt@stericsson.com>
Tested-by: Michael BRANDT <michael.brandt@stericsson.com>
Reviewed-by: Martin LUNDHOLM <martin.xa.lundholm@stericsson.com>
Tested-by: Martin LUNDHOLM <martin.xa.lundholm@stericsson.com>
Reviewed-by: Mikael LARSSON <mikael.xt.larsson@stericsson.com>
Tested-by: Mikael LARSSON <mikael.xt.larsson@stericsson.com>
Diffstat (limited to 'board/st/u8500/init_mmc.h')
-rwxr-xr-x | board/st/u8500/init_mmc.h | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/board/st/u8500/init_mmc.h b/board/st/u8500/init_mmc.h deleted file mode 100755 index b66f866f8..000000000 --- a/board/st/u8500/init_mmc.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2009 - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#ifndef __INIT_MMC_H -#define __INIT_MMC_H -#define PUBLIC /* Extern by default */ - -#include <common.h> - -typedef void (*t_callback_fct) (u32); -typedef struct -{ - t_callback_fct fct; - u32 param; -} t_callback; - -static int init_mmc(void); -int init_mmc_fat(void); -t_mmc_error mmc_fat_read_file (char *, u32, u32); -int mmc_hw_init (void); -unsigned long mmc_block_read(int dev,unsigned long blknr,lbaint_t blkcnt,void *dest); - - -#endif /* !defined(__INIT_MMC_H) */ |