diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/at91/clk-pll.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/clk/at91/clk-pll.c b/drivers/clk/at91/clk-pll.c index 6ec79dbc0840..cbbe40377ad6 100644 --- a/drivers/clk/at91/clk-pll.c +++ b/drivers/clk/at91/clk-pll.c @@ -173,8 +173,7 @@ static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate, int i = 0; /* Check if parent_rate is a valid input rate */ - if (parent_rate < characteristics->input.min || - parent_rate > characteristics->input.max) + if (parent_rate < characteristics->input.min) return -ERANGE; /* @@ -187,6 +186,15 @@ static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate, if (!mindiv) mindiv = 1; + if (parent_rate > characteristics->input.max) { + tmpdiv = DIV_ROUND_UP(parent_rate, characteristics->input.max); + if (tmpdiv > PLL_DIV_MAX) + return -ERANGE; + + if (tmpdiv > mindiv) + mindiv = tmpdiv; + } + /* * Calculate the maximum divider which is limited by PLL register * layout (limited by the MUL or DIV field size). |