[PATCH 1/1] mmc: sdhci-esdhc: Change delay after setting clock from 100ms to 1ms

Tony Lin tony.lin at freescale.com
Thu Sep 1 01:51:15 EDT 2011


1ms is enough for hardware to change the clock to stable.
100ms is too long.

Signed-off-by: Tony Lin <tony.lin at freescale.com>
---
 drivers/mmc/host/sdhci-esdhc.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index c3b08f1..b97b2f5 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -73,7 +73,7 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 		| (div << ESDHC_DIVIDER_SHIFT)
 		| (pre_div << ESDHC_PREDIV_SHIFT));
 	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
-	mdelay(100);
+	mdelay(1);
 out:
 	host->clock = clock;
 }
-- 
1.7.0.4





More information about the linux-arm-kernel mailing list