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mmc: omap: restore original power up/down steps 

[ Upstream commit 894ad61b85 ]

Commit e519f0bb64 ("ARM/mmc: Convert old mmci-omap to GPIO descriptors")
moved Nokia N810 MMC power up/down from the board file into the MMC driver.

The change removed some delays, and ordering without a valid reason.
Restore power up/down to match the original code. This matters only on N810
where the 2nd GPIO is in use. Other boards will see an additional delay but
that should be a lesser concern than omitting delays altogether.

Fixes: e519f0bb64 ("ARM/mmc: Convert old mmci-omap to GPIO descriptors")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Message-ID: <20240223181439.1099750-6-aaro.koskinen@iki.fi>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aaro Koskinen 2024-02-23 20:14:39 +02:00 committed by Greg Kroah-Hartman
parent f6c34c9bb3
commit ff75f9f749
1 changed files with 19 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/mmc/host/omap.c
View File

@ -1119,10 +1119,25 @@ static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on,
host = slot->host;
if (slot->vsd)
gpiod_set_value(slot->vsd, power_on);
if (slot->vio)
gpiod_set_value(slot->vio, power_on);
if (power_on) {
if (slot->vsd) {
gpiod_set_value(slot->vsd, power_on);
msleep(1);
}
if (slot->vio) {
gpiod_set_value(slot->vio, power_on);
msleep(1);
}
} else {
if (slot->vio) {
gpiod_set_value(slot->vio, power_on);
msleep(50);
}
if (slot->vsd) {
gpiod_set_value(slot->vsd, power_on);
msleep(50);
}
}
if (slot->pdata->set_power != NULL)
slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on,