Immediately after reset, issue the command which sets
update_clock_register_only bit, the card clock will restart.
MMC_PM_KEEP_POWER is disabled for SD card and eMMC slots, so that they
have no chance to invoke dw_mci_setup_bus for update clock behaviour.
Let's consummate it.
Fixes: e9ed883 ("mmc: dw_mmc: add runtime PM callback")
Reported-by: Randy Li <randy.li@xxxxxxxxxxxxxx>
Signed-off-by: Ziyuan Xu <xzy.xu@xxxxxxxxxxxxxx>
---
drivers/mmc/host/dw_mmc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index b44306b..71715b4 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -3357,6 +3357,8 @@ int dw_mci_runtime_resume(struct device *dev)
if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) {
dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
dw_mci_setup_bus(slot, true);
+ } else {
+ mci_send_cmd(slot, SDMMC_CMD_UPD_CLK, 0);
}
}
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
