[U-Boot] [PATCH v1 10/11] mmc: do not change mode when accessing a boot partition
Jean-Jacques Hiblot
jjhiblot at ti.com
Thu Jun 27 10:31:39 UTC 2019
Accessing the boot partition had been error prone with HS200 and HS400 and
was disabled. The driver first switched to a lesser mode and then switched
the partition access. It was mostly due to a bad handling of the switch and
has been fixed, so let's remove this 'feature'
Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
---
drivers/mmc/mmc.c | 36 ------------------------------------
1 file changed, 36 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index b0684596f9..709733747a 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -955,46 +955,10 @@ static int mmc_set_capacity(struct mmc *mmc, int part_num)
return 0;
}
-#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
-static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num)
-{
- int forbidden = 0;
- bool change = false;
-
- if (part_num & PART_ACCESS_MASK)
- forbidden = MMC_CAP(MMC_HS_200);
-
- if (MMC_CAP(mmc->selected_mode) & forbidden) {
- pr_debug("selected mode (%s) is forbidden for part %d\n",
- mmc_mode_name(mmc->selected_mode), part_num);
- change = true;
- } else if (mmc->selected_mode != mmc->best_mode) {
- pr_debug("selected mode is not optimal\n");
- change = true;
- }
-
- if (change)
- return mmc_select_mode_and_width(mmc,
- mmc->card_caps & ~forbidden);
-
- return 0;
-}
-#else
-static inline int mmc_boot_part_access_chk(struct mmc *mmc,
- unsigned int part_num)
-{
- return 0;
-}
-#endif
-
int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
{
int ret;
- ret = mmc_boot_part_access_chk(mmc, part_num);
- if (ret)
- return ret;
-
ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
(mmc->part_config & ~PART_ACCESS_MASK)
| (part_num & PART_ACCESS_MASK));
--
2.17.1
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