I'm looking for support for spi slave with sdma. Do you have any suggestion?
I know that there's around a patch to use ecspi as spi slave in pio mode (something like [RFC,5/5] spi: imx: Add support for SPI Slave mode for imx53 and imx6 chips - Patchwork ) and I gave it a try. But I would like to use the ecspi to receive a fast stream of data.
I had a look at sdma hacking articles (Jonah's Blog by skrap and Freescale i.MX SDMA tutorial (part I)) and it could be a way to implement something but I wonder if NXP guys could suggest something more standard using current sdma driver.
Thank you for your help,