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arm: exynos: fix the div value for set_mmc_clk

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The most exynos used the  "Ratio + 1" as div value.
And value at register is "Ratio".
So if want to set exact value, it needs to subtract one.

Value at register ("Ratio") = div - 1

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Jaehoon Chung 2015-01-08 16:50:21 +09:00 committed by Minkyu Kang
parent bd2a4888b1
commit a276172cf3
1 changed files with 4 additions and 0 deletions

4
arch/arm/cpu/armv7/exynos/clock.c
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@ -1656,6 +1656,10 @@ unsigned long get_mmc_clk(int dev_index)
void set_mmc_clk(int dev_index, unsigned int div)
{
/* If want to set correct value, it needs to substract one from div.*/
if (div > 0)
div -= 1;
if (cpu_is_exynos5()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
exynos5420_set_mmc_clk(dev_index, div);