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Hi,

We are using SAM9g25 processor and kernel linux 3.10 version. The processor supports Master/Slave which I got it from data-sheet but when
I looked kernel and it supports only master interface, I hope the driver will be supported by Atmel. Please some one share the link or patch or the kernel version which supports the slave of sam925.

You would need to use Linux kernel version 4.13 or later for framework that supports SPI slave mode.
However the Atmel SPI device driver, spi-atmel.c, only supports supports master mode.

You will have to write your own driver for SPI slave mode.

BTW the SAM9G25 is a SoC that has a ARM926EJ-S processor.
The SPI controller is part of the SoC, not the processor.

Regards

Hi,

Thank you for the response. It means atmel will not support spi slave in their driver but still we can use our own driver as a slave since hardware
supports it. Is there any API or document to make this? Please suggest me.

Thanks
Gopi Krishna

Try this.

Regards

Hi,

Even after doing changes in spi-atmel.c, I face lot of difficulties to make it working. Is Atmel does not have any document to do that?

Please kindly helpful.

Thanks
Gopi Krishna

ramgopikrishna wrote: ↑Is Atmel does not have any document to do that?

AFAIK there are no such documents.
You could check with Atmel/Microchip Tech Support.

Regards

Hi,

I have changes which supports spi atmel as a slave, if needed I will share the patch and where I need to share the patch and it might help
others>? please let me know.

ramgopikrishna wrote: Hi,

I have changes which supports spi atmel as a slave, if needed I will share the patch and where I need to share the patch and it might help
others>? please let me know.

Hello Gopi Krishna,

please post your patch here.