diff options
| author | Simon Horman <horms@verge.net.au> | 2012-03-28 18:01:10 +0900 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-04-05 20:32:24 -0400 |
| commit | 930f152cc9998388031af577843baae572ac8ab6 (patch) | |
| tree | 216a0a14ff0758a906abbf3d51df616d9330fbc7 /drivers | |
| parent | f93882570496aa02ba8a47bfaf81cce43046b978 (diff) | |
| download | linux-stable-930f152cc9998388031af577843baae572ac8ab6.tar.gz linux-stable-930f152cc9998388031af577843baae572ac8ab6.tar.bz2 linux-stable-930f152cc9998388031af577843baae572ac8ab6.zip | |
mmc: sh_mmcif: mmc->f_max should be half of the bus clock
mmc->f_max should be half of the bus clock.
And now that mmc->f_max is not equal to the bus clock the
latter should be used directly to calculate mmc->f_min.
Cc: Magnus Damm <magnus.damm@gmail.com>
Tested-by: Cao Minh Hiep <hiepcm@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sh_mmcif.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index d79c6430c164..4bb999ed335d 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -1298,14 +1298,14 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) spin_lock_init(&host->lock); mmc->ops = &sh_mmcif_ops; - mmc->f_max = host->clk; + mmc->f_max = host->clk / 2; /* close to 400KHz */ - if (mmc->f_max < 51200000) - mmc->f_min = mmc->f_max / 128; - else if (mmc->f_max < 102400000) - mmc->f_min = mmc->f_max / 256; + if (host->clk < 51200000) + mmc->f_min = host->clk / 128; + else if (host->clk < 102400000) + mmc->f_min = host->clk / 256; else - mmc->f_min = mmc->f_max / 512; + mmc->f_min = host->clk / 512; if (pd->ocr) mmc->ocr_avail = pd->ocr; mmc->caps = MMC_CAP_MMC_HIGHSPEED; |