On 2/12/25 7:12 PM, Denzeel Oliva wrote: > +static const struct s3c64xx_spi_port_config exynos990_spi_port_config = { > + /* fifo-depth must be specified in the device tree. */ > + .fifo_depth = 0, have you tried testing without specifying the fifo_depth in DT? You'll probably hit a divide by zero at: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/spi/spi-s3c64xx.c#n664 I assume the controller can work with 0 sized FIFO depth, and if so, the driver has to be updated to allow 0 sized FIFOs. btw, how did you test the set?