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mmc: dw_mmc: Enable low-power mode for the card clock.
author
Will Newton
<will.newton@gmail.com>
Thu, 10 Feb 2011 10:40:57 +0000
(10:40 +0000)
committer
Chris Ball
<cjb@laptop.org>
Tue, 15 Mar 2011 17:48:53 +0000
(13:48 -0400)
Setting this bit in the clock enable register will stop the clock
when the card is in the IDLE state.
Signed-off-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/dw_mmc.c
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diff --git
a/drivers/mmc/host/dw_mmc.c
b/drivers/mmc/host/dw_mmc.c
index c01cb8642fb52db4099c62447391ff441a1e8947..cd6d8212dacc25154cc87fa9bbf9c7e2cff9a8b7 100644
(file)
--- a/
drivers/mmc/host/dw_mmc.c
+++ b/
drivers/mmc/host/dw_mmc.c
@@
-562,7
+562,8
@@
static void dw_mci_setup_bus(struct dw_mci_slot *slot)
SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
/* enable clock */
- mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE);
+ mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE |
+ SDMMC_CLKEN_LOW_PWR);
/* inform CIU */
mci_send_cmd(slot,
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