the i.MX6 issue of data that should not be received from SPI

[massohy]

Dear community member,

I have a issue on SPI in i.MX6 with yocto 3.14.52. I got a error transferring data via SPI as a master.

It is occurred in spi_imx_isr(). My software already complete to read all data, but rx_available() return true. So, spi_imx->txfifo will be minus, as a result, this function will return IRQ_HANDLED.

I added this code,

if(spi_imx->txfifo < 0) spi_imx->txfifo = 0;

but error was occurred again.

Please tell me why does rx_available() return true already data should be empty.

Or Is the patch existing to solve this problem?

Best regards,

[igorpadykov]

Hi mas

one can test with spi unit test (folder ../mxc_spi_test) and

compare ecspi registers with custom application case

[meta-fsl-arm,16/27] imx-test: Upgrade to 5.3 version - Patchwork 

L3.14.52 Demo Image

i.MX 6QuadPlus, i.MX 6Quad, i.MX 6DualPlus, i.MX 6Dual, i.MX 6DualLite, i.MX 6Solo Linux Binary Demo...

Best regards
igor
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