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Message-ID: <20090807195804.GA2735@oksana.dev.rtsoft.ru> Date: Fri, 7 Aug 2009 23:58:04 +0400 From: Anton Vorontsov <avorontsov@...mvista.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Pierre Ossman <pierre@...man.eu>, Kumar Gala <galak@...nel.crashing.org>, David Vrabel <david.vrabel@....com>, Ben Dooks <ben@...ff.org>, Sascha Hauer <s.hauer@...gutronix.de>, linux-kernel@...r.kernel.org, sdhci-devel@...ts.ossman.eu, linuxppc-dev@...abs.org Subject: [PATCH 1/7] sdhci-of: Fix SD clock calculation 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@...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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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