How to test my spi interface?

[mingmingyuan]

board:sambaSD

system:linux 3.0.35

I want to test my spi interface and ensure my spi interface can send and receive data. Can you tell me how to test this?

[mingmingyuan]

dear sir:

whether I need to connect MISO to MOSI for test?

thanks

[mingmingyuan]

dear sir:

I don't know how to set loopback, can you guide me or give me some documents?

thanks

[igorpadykov · Accepted solution]

please read Chapter 21

Enhanced Configurable SPI (ECSPI)

IMX6DQRM

i.MX 6Dual/6Quad Applications Processor Reference Manual.

Yes one can connect MISO to MOSI.

~igor

[mingmingyuan]

​hi sir:

thanks for your help.

can you tell me how to connect hardware?

[igorpadykov]

Hi mingming

I think you can set loopback mode:

ECSPIx_TESTREG bit LBC

~igor

[igorpadykov]

Hi mingming

one can look at imx-test-x.x.x package (included in ltib), attached

android-imx6-kitkat/0076-ENGR00104947-Add-spi-test.patch at master · rabeeh/android-imx6-kitkat · Gi...

Best regards

igor

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