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| author | James Liao <jamesjj.liao@mediatek.com> | 2015-07-10 16:39:33 +0800 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2015-07-28 11:58:54 -0700 |
| commit | 196de71a9d9e9090406a87362d22b67ae633fa7a (patch) | |
| tree | 615be1dddf4c657e5114458cfae75d5e4e6ad6d7 /drivers/clk | |
| parent | b3be457e5854e3095cd0be850058c765aaf467ab (diff) | |
| download | linux-stable-196de71a9d9e9090406a87362d22b67ae633fa7a.tar.gz linux-stable-196de71a9d9e9090406a87362d22b67ae633fa7a.tar.bz2 linux-stable-196de71a9d9e9090406a87362d22b67ae633fa7a.zip | |
clk: mediatek: Fix calculation of PLL rate settings
Avoid u32 overflow when calculate post divider setting, and
increase the max post divider setting from 3 (/8) to 4 (/16).
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/mediatek/clk-pll.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c index 68af5183cda0..0e3f4ef0e871 100644 --- a/drivers/clk/mediatek/clk-pll.c +++ b/drivers/clk/mediatek/clk-pll.c @@ -144,9 +144,9 @@ static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, if (freq > pll->data->fmax) freq = pll->data->fmax; - for (val = 0; val < 4; val++) { + for (val = 0; val < 5; val++) { *postdiv = 1 << val; - if (freq * *postdiv >= fmin) + if ((u64)freq * *postdiv >= fmin) break; } |