Improve the performance of i.MX6ULL ECSPI1

[story]

I am using i.MX6ULL, the kernel version is 4.1.15, DMA is enabled by default, and now I want to improve the performance of spi.

1. imx6ull starts to send data, after the cs pin pulls the bottom after 36us, the clk signal comes out.

2. After receiving the data, wait for 36us to pull up the cs pin.

3. Continuously send data, the two transf intervals are longer, about 160us.

I want to reduce these intervals, what should I do?

[igorpadykov]

Hi 扬 杨 

one can try to use M4 core and MX6ULL  FreeRTOS  SDK2.2 for ecspi tasks,

Windows Installer: MCUXpresso SDK2.2 for i.MX 6ULL

also nxp has special service for helping customers with specific customizations

and performance improvements:

NXP Professional Services | NXP 

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------