On STM32MP157f-DK2 what is interrupt on GIC when a block is read by the CPU from microSD (SDMMC1)

[debashis]

Hi,

I am using a STM32MP157f-DK2 platform with Linux distribution software downloaded from ST download link for the platform. Can you please help to understand what is the interrupt that CPU will get when a data block is read from the SD card? Is it SDMMC Global interrupt or some DMA interrupt? I thought it would be SDMMC global interrupt, and then CPU need to read SDMMC registers to find out what is the actual cause of the interrupt. Not sure if this is the correct understand. Can you please help to clarify or point me to some document or code path for this.

 

Regards,

debashis  

[Erwan SZYMANSKI]

Hello @debashis ,
Please refer to chapter 21.2 (GIC interrupts) and chapter 58 (SDMMC) of STM32MP157 Reference Manual : https://www.st.com/resource/en/reference_manual/DM00327659-.pdf

Kind regards,
Erwan.

[debashis]

Thanks Erwan.