Re: [PATCH] Revert "tty: serial: fsl_lpuart: Fix the wrong RXWATER setting for rx dma case"

[Robert Hodaszi <robert.hodaszi@xxxxxxxx>]

On 2023. 06. 08. 11:58, Sherry Sun wrote:
> Oh, maybe LS1028 use the old IP version LPUART.
> If this is the case, I suggest that you can set the rx_watermark of ls1028 to 0.
>
> static const struct lpuart_soc_data ls1028a_data = {
>     .devtype = LS1028A_LPUART,
>     .iotype = UPIO_MEM32,
>     .rx_watermark = 0,
> };
>
> Best Regards
> Sherry

Ok, that should work in my case, as that's basically the same as reverting the patch. And I'm not losing anything on non-DMA case, as DMA is always used.

But the other platforms should be fixed as well, as it is a global issue across platforms using DMA with LPUART. So please push up then your previous patch with RXIDEN for platforms supporting that.

Thanks,
Robert