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| author | Amaury Pouly <amaury.pouly@gmail.com> | 2012-12-02 11:51:17 +0100 |
|---|---|---|
| committer | Amaury Pouly <amaury.pouly@gmail.com> | 2012-12-02 11:51:51 +0100 |
| commit | d119fb1fc5b917e430b23a28bebf6ec5db35b34e (patch) | |
| tree | 6d7c6afb422d8f462ff3c9272f1d4c0901f26880 /firmware/target/arm/imx233/audioout-imx233.c | |
| parent | 4dd2c5277b6da35ceb200d814c39a581e69c5258 (diff) | |
| download | rockbox-d119fb1fc5b917e430b23a28bebf6ec5db35b34e.tar.gz rockbox-d119fb1fc5b917e430b23a28bebf6ec5db35b34e.zip | |
imx233: try to improve audio quality
Change-Id: Idaee93fae8d407e5968f8571c54957b7b87da3bb
Diffstat (limited to 'firmware/target/arm/imx233/audioout-imx233.c')
| -rw-r--r-- | firmware/target/arm/imx233/audioout-imx233.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/audioout-imx233.c b/firmware/target/arm/imx233/audioout-imx233.c index e5e1e37264..e9b368c9b6 100644 --- a/firmware/target/arm/imx233/audioout-imx233.c +++ b/firmware/target/arm/imx233/audioout-imx233.c | |||
| @@ -53,6 +53,13 @@ void imx233_audioout_preinit(void) | |||
| 53 | __REG_CLR(HW_AUDIOOUT_PWRDN) = HW_AUDIOOUT_PWRDN__HEADPHONE; | 53 | __REG_CLR(HW_AUDIOOUT_PWRDN) = HW_AUDIOOUT_PWRDN__HEADPHONE; |
| 54 | /* Set HP mode to AB */ | 54 | /* Set HP mode to AB */ |
| 55 | __REG_SET(HW_AUDIOOUT_ANACTRL) = HW_AUDIOOUT_ANACTRL__HP_CLASSAB; | 55 | __REG_SET(HW_AUDIOOUT_ANACTRL) = HW_AUDIOOUT_ANACTRL__HP_CLASSAB; |
| 56 | /* change biais to -50% */ | ||
| 57 | __REG_CLR(HW_AUDIOOUT_TEST) = HW_AUDIOOUT_TEST__HP_I1_ADJ_BM; | ||
| 58 | __REG_SET(HW_AUDIOOUT_TEST) = HW_AUDIOOUT_TEST__HP_I1_ADJ_M_50; | ||
| 59 | __REG_CLR(HW_AUDIOOUT_REFCTRL) = HW_AUDIOOUT_REFCTRL__BIAS_CTRL_BM; | ||
| 60 | __REG_SET(HW_AUDIOOUT_REFCTRL) = 1 << HW_AUDIOOUT_REFCTRL__BIAS_CTRL_BP; | ||
| 61 | __REG_SET(HW_AUDIOOUT_REFCTRL) = HW_AUDIOOUT_REFCTRL__RAISE_REF; | ||
| 62 | __REG_SET(HW_AUDIOOUT_REFCTRL) = HW_AUDIOOUT_REFCTRL__XTAL_BGR_BIAS; | ||
| 56 | /* Stop holding to ground */ | 63 | /* Stop holding to ground */ |
| 57 | __REG_CLR(HW_AUDIOOUT_ANACTRL) = HW_AUDIOOUT_ANACTRL__HP_HOLD_GND; | 64 | __REG_CLR(HW_AUDIOOUT_ANACTRL) = HW_AUDIOOUT_ANACTRL__HP_HOLD_GND; |
| 58 | /* Set dmawait count to 31 (see errata, workaround random stop) */ | 65 | /* Set dmawait count to 31 (see errata, workaround random stop) */ |