i.MX ProcessorsのトピックRe: How to write spi custom device driver for sensor

How to write spi custom device driver for sensor

Dhevan — Wed, 16 Feb 2022 08:30:16 GMT

Hi,

I want to write custom linux spi device driver for imx8m mini.

Which kernal api and documentation i need to refer.

AldoG — Fri, 18 Feb 2022 23:34:21 GMT

Dhevan — Mon, 21 Feb 2022 08:22:41 GMT

Thanks for your reply.

If we wrote two independent kernel device driver our issue will resolve ?

I have another doubt's also.

kernel driver - spi-imx.c and spidev.c what will be the difference between these two driver?

Thanks & Regards,

Vasu

AldoG — Wed, 23 Feb 2022 01:26:17 GMT

Hi,

Sorry I don't know what kind of issue are you referring to.

For difference, spi-imx is the SPI Master controller driver, while spidev is a userspace kernel driver.

You can refer to the following documentation:
https://source.codeaurora.org/external/imx/linux-imx/tree/Documentation/spi/spidev.rst?h=lf-5.10.y

Best regards,
Aldo.