On Mon, Sep 19, 2022 at 03:38:29PM +0100, Mark Brown wrote: > On Fri, Sep 16, 2022 at 01:39:51PM +0200, Vincent Whitchurch wrote: > > The COUNT_VALUE in the PACKET_CNT register is 16-bit so the maximum > > value is 65535. Asking the driver to transfer a larger size currently > > leads to the DMA transfer timing out. Fix this by splitting the > > transfer as needed. > > The driver should just set max_transfer_size and let the core > handle this. Hmm, AFAICS, the core doesn't actually do anything with max_transfer_size? It's only used from spi-mem and a handful of other clients via spi_max_transfer_size().