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mmc: am654_sdhci: Fix ITAPDLY for HS400 timing

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At HS400 mode the ITAPDLY value is that from High Speed mode
which is incorrect and may cause boot failures.

The ITAPDLY for HS400 speed mode should be the same as ITAPDLY
as HS200 timing after tuning is executed. Add the functionality
to save ITAPDLY from HS200 tuning and save as HS400 ITAPDLY.

Fixes: c964447ea3 ("mmc: am654_sdhci: Add support for input tap delay")
Signed-off-by: Judith Mendez <jm@ti.com>
This commit is contained in:
Judith Mendez
2024-04-18 14:01:00 -05:00
committed by Tom Rini
parent a124e31a97
commit f13a830e6e
1 changed files with 8 additions and 0 deletions
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8
drivers/mmc/am654_sdhci.c
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@@ -295,6 +295,11 @@ static int am654_sdhci_set_ios_post(struct sdhci_host *host)
return ret;
plat->dll_enable = true;
if (mode == MMC_HS_400) {
plat->itap_del_ena[mode] = ENABLE;
plat->itap_del_sel[mode] = plat->itap_del_sel[mode - 1];
}
am654_sdhci_write_itapdly(plat, plat->itap_del_sel[mode],
plat->itap_del_ena[mode]);
} else {
@@ -486,6 +491,9 @@ static int am654_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
itap = am654_sdhci_calculate_itap(dev, fail_window, fail_index,
plat->dll_enable);
/* Save ITAPDLY */
plat->itap_del_sel[mode] = itap;
am654_sdhci_write_itapdly(plat, itap, plat->itap_del_ena[mode]);
return 0;