Messages in this thread Patch in this message | | | Date | Fri, 7 Aug 2009 23:58:04 +0400 | From | Anton Vorontsov <> | Subject | [PATCH 1/7] sdhci-of: Fix SD clock calculation |
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Linear divisor's values in a register start at 0 (zero means "divide by 1"). Before this patch the code didn't account that fact, so SD cards were running underclocked.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> --- drivers/mmc/host/sdhci-of.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of.c b/drivers/mmc/host/sdhci-of.c index 9088443..92b5667 100644 --- a/drivers/mmc/host/sdhci-of.c +++ b/drivers/mmc/host/sdhci-of.c @@ -136,6 +136,7 @@ static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock) } pre_div >>= 1; + div--; setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | -- 1.6.3.3
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