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- Patch to enable ASRC_P2P support for SSI based on Kernel 3.0.35 for I.MX6DL/DQ SebreSD boards
Patch to enable ASRC_P2P support for SSI based on Kernel 3.0.35 for I.MX6DL/DQ SebreSD boards
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Patch to enable ASRC_P2P support for SSI based on Kernel 3.0.35 for I.MX6DL/DQ SebreSD boards
Patch to enable ASRC_P2P support for SSI based on Kernel 3.0.35 for I.MX6DL/DQ SebreSD boards
i.MX6 4.0.0 BSP release doesn't support ASRC_P2P function. This patch provides the reference codes to enable ASRC_P2P function for SSI. It can convert input sample rate to 44.1K_16bit/44.1K_24bit and 48K_16bit/48K_24bit. You can modify the configurations in the Board file.
By the way, the SSI controler works at slave mode.
Known limitations for the patch:
-- The SDMA doesn't support SSI Dual FIFO when using ASRC_P2P function.
-- From the waveform, the converted 24bit data have some abnormal data(values between 0 and 1) , but can't hear any abnormal sound from headphone. One suggestion is given under https://community.freescale.com/docs/DOC-95340
Comments
02-14-2014
03:41 AM
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02-14-2014
03:41 AM
Hi,
Lei Ge / Xiaoli Zhang
We have implemented P2P ASRC for recording using your attached patch.
ASRC is working perfectly but it stops working after 8 to 10 hours of Recording.
We are getting Overflow error in SDMA_MODE_P2P mode.
How to fix this issue?
Saurabh
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