diff options
| author | Chen Liangjun <b36089@freescale.com> | 2012-08-16 19:20:51 +0800 |
|---|---|---|
| committer | Chen Liangjun <b36089@freescale.com> | 2012-08-17 15:38:31 +0800 |
| commit | e2dc80107eeaa87626f02adba60ab904c41de82e (patch) | |
| tree | 40ae9454dad49def86137c8535504a328407bd23 /drivers | |
| parent | 59f87e44a8faaef59969daadd1a7d295adbda3a0 (diff) | |
ENGR00219926-1 ESAI ASRC: use ideal ratio for ASRC P2P playback
When use no ideal-ratio mode for ESAI playback, CPU should provide
accurate clock for input clock, which means input clock should be
divided by input sample rate. However, all our clock is from 24M crystal
and if the input sample rate equal to 44.1k or so, CPU can't provide
these clock.
In this patch, use ideal ratio mode thus CPU need not provide accurate
clock which can be divided by 44.1k.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mxc/asrc/mxc_asrc.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mxc/asrc/mxc_asrc.c b/drivers/mxc/asrc/mxc_asrc.c index ed3256906863..cd4d9ee98a9f 100644 --- a/drivers/mxc/asrc/mxc_asrc.c +++ b/drivers/mxc/asrc/mxc_asrc.c @@ -583,17 +583,23 @@ int asrc_config_pair(struct asrc_config *config) } } - if ((config->inclk == INCLK_ASRCK1_CLK) && + if ((config->inclk == INCLK_NONE) && (config->outclk == OUTCLK_ESAI_TX)) { reg = __raw_readl(g_asrc->vaddr + ASRC_ASRCTR_REG); - reg |= (1 << (20 + config->pair)); - reg |= (0x02 << (13 + (config->pair << 1))); + reg &= ~(1 << (20 + config->pair)); + reg |= (0x03 << (13 + (config->pair << 1))); __raw_writel(reg, g_asrc->vaddr + ASRC_ASRCTR_REG); err = asrc_set_clock_ratio(config->pair, config->input_sample_rate, config->output_sample_rate); if (err < 0) return err; + err = asrc_set_process_configuration(config->pair, + config->input_sample_rate, + config-> + output_sample_rate); + if (err < 0) + return err; } /* Config input and output wordwidth */ |