How to use SDMA with SSI data transmission for i.MX6Quad

yuuki · ‎02-17-2016

Dear all,

We output some data from SSI I/F of i.MX6Quad.

OS is Android4.4.3 of NXP BSP.

However, one core is occupied because the data are handled by BusyLoop,

Therefore we want to use SDMA.

Would you tell me the method using SDMA in SSI data transfer?
If there is a sample cord, would you send it?

Best Regards,
Yuuki

igorpadykov · ‎02-17-2016

Hi Yuuki

SDMA with SSI is supported in Linux, refer to attached Linux

Manual Table 4-1. SDMA Channel Usage, Table 28-1. Stereo Codec SoC Driver Files

file fsl/fsl_ssi.c - SSI CPU DAI driver for stereo CODEC ALSA SoC

Board Support Packages (32)

L3.14.52_1.1.0_MX6QDLSOLO (REV L3.14.52_1.1.0)

Best regards

igor

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