topic Re: SPI interrupt for ECSPI4 using RXBUFF register fot i.MX6UL. in i.MX Processors

SPI interrupt for ECSPI4 using RXBUFF register fot i.MX6UL.

stevegabriel123 — Thu, 19 Mar 2020 05:16:09 GMT

I want to implement SPI interrupt using RXBUFF register. I dont have any idea how to implement it in spi-imx.c.

Does anyone have any solution regarding it. I just want to create an interrupt for SPI communication.

Re: SPI interrupt for ECSPI4 using RXBUFF register fot i.MX6UL.

igorpadykov — Fri, 20 Mar 2020 05:24:49 GMT

Hi steve

ecspi is already using interrupts, one can look at dts file:

ecspi4: ecspi@2014000 {.. reg = <0x2014000 0x4000>;
interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;

imx6ul.dtsi\dts\boot\arm\arch - linux-imx - i.MX Linux kernel

Linux interrupt infrastructure is described in sect.2.1.2.4 Interrupt Source Code Structure

attached Linux Manual. Driver sources:

spi-imx.c\spi\drivers - linux-imx - i.MX Linux kernel

Best regards
igor
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Re: SPI interrupt for ECSPI4 using RXBUFF register fot i.MX6UL.

stevegabriel123 — Tue, 24 Mar 2020 09:18:22 GMT

Thanks Igor. But i do not know how to use and monitor it.

My main task is to monitor the interrupt when i receive data on SPI, Once interrupt is occurred, I want to confirm it and read the coming data.