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Commit 62ce34b0 authored by Russell King's avatar Russell King Committed by Ulf Hansson
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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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 43e968ce

drivers/mmc/host/sdhci.c

+0 −3
Original line number Diff line number Diff line
@@ -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)