Noncacheable data for drivers

[embeddman]

Hello!

I'm using lpuart and lpspi drivers with EDMA. For applying EDMA, buffers must be located in noncacheable regions of RAM with AT_NONCACHEABLE_SECTION_INIT macro. But in lpspi example lpspi_master_edma_handle_t structure is also located in this section unlike lpuart_edma_handle_t structure which is not located in noncacheable region. Should these two structures be located in noncacheable region or it doesn't matter?

[jeremyzhou · Accepted solution]

Hi @embeddman ,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1) Should these two structures be located in non cacheable region or it doesn't matter?
-- It doesn't matter.
Have a great day,
TIC

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