leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: all hosts support 1-bit bus width and legacy timings

Browse Source 
Make sure that those basic capabilities are advertised by the host.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Jean-Jacques Hiblot 2017-11-30 17:43:57 +01:00 committed by Jaehoon Chung
parent 00e446fa04
commit 1da8eb598f
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/mmc/mmc.c
View File

@ -1584,11 +1584,11 @@ static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps)
#ifdef DEBUG
mmc_dump_capabilities("sd card", card_caps);
mmc_dump_capabilities("host", mmc->host_caps | MMC_MODE_1BIT);
mmc_dump_capabilities("host", mmc->host_caps);
#endif
/* Restrict card's capabilities by what the host can do */
caps = card_caps & (mmc->host_caps | MMC_MODE_1BIT);
caps = card_caps & mmc->host_caps;
if (!uhs_en)
caps &= ~UHS_CAPS;
@ -1770,11 +1770,11 @@ static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps)
#ifdef DEBUG
mmc_dump_capabilities("mmc", card_caps);
mmc_dump_capabilities("host", mmc->host_caps | MMC_MODE_1BIT);
mmc_dump_capabilities("host", mmc->host_caps);
#endif
/* Restrict card's capabilities by what the host can do */
card_caps &= (mmc->host_caps | MMC_MODE_1BIT);
card_caps &= mmc->host_caps;
/* Only version 4 of MMC supports wider bus widths */
if (mmc->version < MMC_VERSION_4)
@ -2389,7 +2389,12 @@ int mmc_start_init(struct mmc *mmc)
bool uhs_en = supports_uhs(mmc->cfg->host_caps);
int err;
mmc->host_caps = mmc->cfg->host_caps;
/*
* all hosts are capable of 1 bit bus-width and able to use the legacy
* timings.
*/
mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) |
MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT;
/* we pretend there's no card when init is NULL */
no_card = mmc_getcd(mmc) == 0;