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| author | Jaehoon Chung <jh80.chung@samsung.com> | 2015-01-08 16:50:21 +0900 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2015-02-13 17:15:14 +0900 |
| commit | a276172cf32386c211c75638f6bf3c0d59ba03ba (patch) | |
| tree | b0fb67e0cce0a29b69fed0065d12a8b3e1a693fa /arch | |
| parent | bd2a4888b123713adec271d6c8040ca9f609aa2f (diff) | |
| download | u-boot-imx-a276172cf32386c211c75638f6bf3c0d59ba03ba.zip u-boot-imx-a276172cf32386c211c75638f6bf3c0d59ba03ba.tar.gz u-boot-imx-a276172cf32386c211c75638f6bf3c0d59ba03ba.tar.bz2 | |
arm: exynos: fix the div value for set_mmc_clk
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/clock.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c index b31c13b..3110bb0 100644 --- a/arch/arm/cpu/armv7/exynos/clock.c +++ b/arch/arm/cpu/armv7/exynos/clock.c @@ -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); |