diff options
Diffstat (limited to 'drivers/clk/stm32/clk-stm32f.c')
| -rw-r--r-- | drivers/clk/stm32/clk-stm32f.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/clk/stm32/clk-stm32f.c b/drivers/clk/stm32/clk-stm32f.c index 4c186419335..d68c75ed201 100644 --- a/drivers/clk/stm32/clk-stm32f.c +++ b/drivers/clk/stm32/clk-stm32f.c @@ -522,18 +522,20 @@ static ulong stm32_set_rate(struct clk *clk, ulong rate) /* get the current PLLSAIR output freq */ pllsair_rate = stm32_clk_get_pllsai_rate(priv, PLLSAIR); - best_div = pllsair_rate / rate; - - /* look into pllsaidivr_table if this divider is available*/ - for (i = 0 ; i < sizeof(pllsaidivr_table); i++) - if (best_div == pllsaidivr_table[i]) { - /* set pll_saidivr with found value */ - clrsetbits_le32(®s->dckcfgr, - RCC_DCKCFGR_PLLSAIDIVR_MASK, - pllsaidivr_table[i] << - RCC_DCKCFGR_PLLSAIDIVR_SHIFT); - return rate; - } + if ((pllsair_rate % rate) == 0) { + best_div = pllsair_rate / rate; + + /* look into pllsaidivr_table if this divider is available */ + for (i = 0 ; i < sizeof(pllsaidivr_table); i++) + if (best_div == pllsaidivr_table[i]) { + /* set pll_saidivr with found value */ + clrsetbits_le32(®s->dckcfgr, + RCC_DCKCFGR_PLLSAIDIVR_MASK, + pllsaidivr_table[i] << + RCC_DCKCFGR_PLLSAIDIVR_SHIFT); + return rate; + } + } /* * As no pllsaidivr value is suitable to obtain requested freq, |