diff options
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_nm.c')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu_nm.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_nm.c b/drivers/clk/sunxi-ng/ccu_nm.c index e35ddd8eec8b..b61bdd8c7a7f 100644 --- a/drivers/clk/sunxi-ng/ccu_nm.c +++ b/drivers/clk/sunxi-ng/ccu_nm.c @@ -61,11 +61,13 @@ static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *parent_rate) { struct ccu_nm *nm = hw_to_ccu_nm(hw); + unsigned long max_n, max_m; unsigned long n, m; - rational_best_approximation(rate, *parent_rate, - 1 << nm->n.width, 1 << nm->m.width, - &n, &m); + max_n = 1 << nm->n.width; + max_m = nm->m.max ?: 1 << nm->m.width; + + rational_best_approximation(rate, *parent_rate, max_n, max_m, &n, &m); return *parent_rate * n / m; } @@ -75,6 +77,7 @@ static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate, { struct ccu_nm *nm = hw_to_ccu_nm(hw); unsigned long flags; + unsigned long max_n, max_m; unsigned long n, m; u32 reg; @@ -83,9 +86,10 @@ static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate, else ccu_frac_helper_disable(&nm->common, &nm->frac); - rational_best_approximation(rate, parent_rate, - 1 << nm->n.width, 1 << nm->m.width, - &n, &m); + max_n = 1 << nm->n.width; + max_m = nm->m.max ?: 1 << nm->m.width; + + rational_best_approximation(rate, parent_rate, max_n, max_m, &n, &m); spin_lock_irqsave(nm->common.lock, flags); |