diff options
| author | Jorge Eduardo Candelaria <x0107209@ti.com> | 2009-07-30 10:21:40 -0500 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2009-07-31 10:26:02 +0530 |
| commit | e8b4f4770072e619279b594afe2f980260e8c5b0 (patch) | |
| tree | 6f56b229f53eaede90f69926cff910ebda3fbc40 | |
| parent | 6a25589143b68b7f50f3f26aa176ca4fc3c82a4b (diff) | |
OMAP4: L24.0.10 kernel release Note: audio featuresti-2.6.31-rc1-omap4-24.0.10
Signed-off-by: Jorge Eduardo Candelaria <x0107209@ti.com>
| -rw-r--r-- | TI_OMAP4_Kernel_Release_Notes_L24.x.txt | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/TI_OMAP4_Kernel_Release_Notes_L24.x.txt b/TI_OMAP4_Kernel_Release_Notes_L24.x.txt index c48d989f2a52..3a673d47d6cc 100644 --- a/TI_OMAP4_Kernel_Release_Notes_L24.x.txt +++ b/TI_OMAP4_Kernel_Release_Notes_L24.x.txt @@ -385,20 +385,46 @@ NA None of the DPLL set_rate and recalc functions are implemented. -Audio - Added TWL6030 ALSA SoC codec driver + Phoenix Audio Support for Low Power and High Performance modes of TWL6030 codec Basic support for audio interrupt: power-up sequence completion - Added McPDM base and SoC platform drivers - Added SDP4430 ALSA SoC machine driver + McPDM (Downlink channels 0 & 1) + Handsfree output + Formats: + - Sample rate: 44.1 and 48 KHz, 96 KHz. + - Bits per sample: 16 and 32 + + Not supported: + McPDM downlink channels 2, 3, & 4 + Handsfree output + Formats: + -Sample rate: 88.2 KHz + + Rate conversion (96 KHz): + ALSA framework automatically converts samples to the correct + sample rate and format supported by the codec. However, this + does currently work for 44.1KHz. + + To use 44.1 KHz sample rate: + -Add to alsa.conf: + pcm.rate96k { + type plug + slave { + pcm "hw:0.0" + rate 96000 + format S32_LE + } + } + -Reproduce file using: #aplay -D rate96k "file.wav" + Additional Comments: - 44.1/48 kHz are supported only with ALSA automatic rate/format conversion - Signed 32-bits LE format at 88.2/96 kHz is supported without conversion - - Validated with ALSA aplay utility using a period size of - 100 frames - twl6030 i2c bus 1 speed was reduced to 400 kbits/s to match codec requirements + - For rate conversion, use aplay with option: -D rate96k -Video Basic Frame Buffer support. |