mmc: sh_mmcif: Simplify calculation of mmc->f_min
Simon Horman [Wed, 28 Mar 2012 09:01:11 +0000 (18:01 +0900)]
There is no need to tune mmc->f_min to a value near 400kHz as the MMC core
begins testing frequencies at 400kHz regardless of the value of mmc->f_min.

As suggested by Guennadi Liakhovetski.

Cc: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Cao Minh Hiep <hiepcm@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/sh_mmcif.c

index 4bb999e..724b35e 100644 (file)
@@ -1299,13 +1299,7 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
 
        mmc->ops = &sh_mmcif_ops;
        mmc->f_max = host->clk / 2;
-       /* close to 400KHz */
-       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 = host->clk / 512;
+       mmc->f_min = host->clk / 512;
        if (pd->ocr)
                mmc->ocr_avail = pd->ocr;
        mmc->caps = MMC_CAP_MMC_HIGHSPEED;