diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2011-03-31 15:05:56 +0200 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@linaro.org> | 2011-05-03 08:25:18 +0200 |
| commit | 2eca83dca60cd37996c6bf6323fda2f3dcb93452 (patch) | |
| tree | cfc7f1a0c37697b4233eb6c7184c669319fb5381 /drivers/mmc | |
| parent | e5f9aae66332521e50da4123de315908dfe30ca9 (diff) | |
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 <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/mmci.c | 2 |
1 files changed, 2 insertions, 0 deletions
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) { /* |