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mmc: core: Update mmc_scale_high logic properly for HS400 mode

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Current mmc_scale_high logic don't work well for HS400 mode.
Infact we are ending up selecting HS200 mode instead of HS400 mode.

Update mmc_scale_high logic properly for HS400 mode.

Change-Id: Ic4960268866c35dd94b5ea9b41a813fc36ba8a94
Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>
This commit is contained in:
Sarthak Garg 2021-02-11 13:43:47 +05:30
commit 3417de3d76
1 changed files with 12 additions and 29 deletions
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45
drivers/mmc/core/mmc.c
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@ -1610,37 +1610,6 @@ static int mmc_scale_high(struct mmc_host *host)
mmc_set_clock(host, MMC_HIGH_26_MAX_DTR);
}
if (!host->card->ext_csd.strobe_support) {
if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)) {
pr_err("%s: %s: card does not support HS200\n",
mmc_hostname(host), __func__);
WARN_ON(1);
return -EPERM;
}
err = mmc_select_hs200(host->card);
if (err) {
pr_err("%s: %s: selecting HS200 failed (%d)\n",
mmc_hostname(host), __func__, err);
return err;
}
mmc_set_bus_speed(host->card);
err = mmc_hs200_tuning(host->card);
if (err) {
pr_err("%s: %s: hs200 tuning failed (%d)\n",
mmc_hostname(host), __func__, err);
return err;
}
if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400)) {
pr_debug("%s: card does not support HS400\n",
mmc_hostname(host));
return 0;
}
}
mmc_set_initial_state(host);
err = mmc_select_timing(host->card);
if (err) {
@ -1649,6 +1618,20 @@ static int mmc_scale_high(struct mmc_host *host)
return err;
}
if (mmc_card_hs200(host->card)) {
err = mmc_hs200_tuning(host->card);
if (err) {
pr_err("%s: %s: hs200 tuning failed (%d)\n",
mmc_hostname(host), __func__, err);
return err;
}
err = mmc_select_hs400(host->card);
if (err) {
pr_err("%s: %s: Select hs400 failed (%d)\n",
mmc_hostname(host), __func__, err);
return err;
}
}
return 0;
}