diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/arm_cortexa8/mx53/generic.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/cpu/arm_cortexa8/mx53/generic.c b/cpu/arm_cortexa8/mx53/generic.c index 3065965..23a2640 100644 --- a/cpu/arm_cortexa8/mx53/generic.c +++ b/cpu/arm_cortexa8/mx53/generic.c @@ -146,23 +146,6 @@ static u32 __get_ipg_clk(void) return __get_periph_clk() / ((ahb_podf + 1) * (ipg_podf + 1)); } -static u32 __get_ipg_per_clk(void) -{ - u32 pred1, pred2, podf; - if (__REG(MXC_CCM_CBCMR) & MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL) - return __get_ipg_clk(); - /* Fixme: not handle what about lpm */ - podf = __REG(MXC_CCM_CBCDR); - pred1 = (podf & MXC_CCM_CBCDR_PERCLK_PRED1_MASK) >> - MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET; - pred2 = (podf & MXC_CCM_CBCDR_PERCLK_PRED2_MASK) >> - MXC_CCM_CBCDR_PERCLK_PRED2_OFFSET; - podf = (podf & MXC_CCM_CBCDR_PERCLK_PODF_MASK) >> - MXC_CCM_CBCDR_PERCLK_PODF_OFFSET; - - return __get_periph_clk() / ((pred1 + 1) * (pred2 + 1) * (podf + 1)); -} - /*! * This function returns the low power audio clock. */ @@ -179,6 +162,30 @@ static u32 __get_lp_apm(void) return ret_val; } +static u32 __get_ipg_per_clk(void) +{ + u32 pred1, pred2, podf; + u32 clk_root; + if (__REG(MXC_CCM_CBCMR) & MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL) + return __get_ipg_clk(); + + /* Fixme: not handle what about lpm */ + if (__REG(MXC_CCM_CBCMR) & MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL) + clk_root = __get_lp_apm(); + else + clk_root = __get_periph_clk(); + + podf = __REG(MXC_CCM_CBCDR); + pred1 = (podf & MXC_CCM_CBCDR_PERCLK_PRED1_MASK) >> + MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET; + pred2 = (podf & MXC_CCM_CBCDR_PERCLK_PRED2_MASK) >> + MXC_CCM_CBCDR_PERCLK_PRED2_OFFSET; + podf = (podf & MXC_CCM_CBCDR_PERCLK_PODF_MASK) >> + MXC_CCM_CBCDR_PERCLK_PODF_OFFSET; + + return clk_root / ((pred1 + 1) * (pred2 + 1) * (podf + 1)); +} + /* static u32 __get_perclk_lp_apm(void) { |