From 2eca83dca60cd37996c6bf6323fda2f3dcb93452 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 31 Mar 2011 15:05:56 +0200 Subject: mmci: force negative edge on clock bypass for ux500 This fixes a regression on high clock speeds with the MMCI on ux500. We need to make sure we derive the passthru clock on the falling edge of the incoming clock if it shall work at high frequencies, and on the ux500's there is a special bit for this. Signed-off-by: Linus Walleij --- drivers/mmc/host/mmci.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/mmc') diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 721c399e1aa..9add9e7a086 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -97,6 +97,8 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) if (desired) { if (desired >= host->mclk) { clk = MCI_CLK_BYPASS; + if (variant->st_clkdiv) + clk |= MCI_ST_UX500_NEG_EDGE; host->cclk = host->mclk; } else if (variant->st_clkdiv) { /* -- cgit v1.2.3