Hi Frank, On Wed, Aug 23, 2023 at 3:01 PM Frank Li <Frank.Li@xxxxxxx> wrote: > > Add dma support for lpuart[2..9]. The lpuart1 is debug console. LPUART1 is the debug console on a particular board, but nothing prevents someone to design an imx93 board that has another LPUART port as the debug console. I suggest enabling DMA for all ports. That's what we do with other i.MX devices. By the way, the fsl_lpuart driver disables DMA for the console: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/serial/fsl_lpuart.c?h=v6.5-rc7#n1696
