mmc: sdhci_am654: Clear ITAPDLY on tuning failure

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When tuning fails, stale ITAPDLY values can persist and interfere with
subsequent I/O accesses, for example in DDR50 mode in cards with no tuning
support. Move the ITAPDLY enable setting out of the tuning loop to after
successful tuning, and explicitly clear ITAPDLY (delay and enable) when
tuning fails so that we are sure only working values are actually left in
hardware.

Fixes: 901d16e462 ("mmc: sdhci_am654: Add retry tuning")
Cc: stable@vger.kernel.org
Signed-off-by: Diogo Ivo (Schneider Electric) <diogo.ivo@bootlin.com>
Reviewed-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>

...

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Diogo Ivo (Schneider Electric) 2026-08-07 13:06:59 +02:00 • committed by Ulf Hansson

parent 7197d9107d

commit c9f47cc8c3

1 changed files with 7 additions and 5 deletions

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drivers/mmc/host/sdhci_am654.c

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