From: Simon Horman Date: Wed, 28 Mar 2012 09:01:10 +0000 (+0900) Subject: mmc: sh_mmcif: mmc->f_max should be half of the bus clock X-Git-Tag: v3.4-rc2~9^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=930f152cc9998388031af577843baae572ac8ab6;p=platform%2Fupstream%2Fkernel-adaptation-pc.git 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 Tested-by: Cao Minh Hiep Acked-by: Guennadi Liakhovetski Signed-off-by: Simon Horman Signed-off-by: Chris Ball --- diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index d79c643..4bb999e 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;