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mmc: sdhci: avoid double-delay while transitioning to 1.8V 

The MMC core in mmc_set_signal_voltage() already provides for the delay
required to switch to 1.8V, so there is no need for drivers to perform
this wait themselves.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Russell King 2014-06-26 15:50:00 +01:00 committed by Ulf Hansson
parent 43e968cec7
commit 62ce34b0ba
1 changed files with 0 additions and 3 deletions
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3
drivers/mmc/host/sdhci.c
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@ -1768,9 +1768,6 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
ctrl |= SDHCI_CTRL_VDD_180;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/* Wait for 5ms */
usleep_range(5000, 5500);
/* 1.8V regulator output should be stable within 5 ms */
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ctrl & SDHCI_CTRL_VDD_180)