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mmc: sh_mmcif: mmc->f_max should be half of the bus clock

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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>
This commit is contained in:
Simon Horman 2012-03-28 18:01:10 +09:00 committed by Chris Ball
parent f938825704
commit 930f152cc9
1 changed files with 6 additions and 6 deletions
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12
drivers/mmc/host/sh_mmcif.c
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@ -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;