Re: [PATCH v4 04/10] serial: bflb_uart: add Bouffalolab UART Driver

Greg Kroah-Hartman
2023-05-31T14:34:09Z

On Wed, May 31, 2023 at 10:09:56PM +0800, Jisheng Zhang wrote:
> On Tue, May 30, 2023 at 11:36:00AM +0100, Greg Kroah-Hartman wrote:
> > On Thu, May 18, 2023 at 11:22:38PM +0800, Jisheng Zhang wrote:
> > > Add the driver for Bouffalolab UART IP which is found in Bouffalolab
> > > SoCs such as bl808.
> >
> > New uarts are being created that are NOT 8250-like? Why????
>
> Hi,
>
> I'm not sure I understand your meaning. I guess you mean writing the new
> uart driver following 8250 style. And the latest example is
> sunplus-uart.c, it can be used as an example how to write a 8250 style
> driver for new non-8250 uart IP.

No, I mean, "why are hardware designers creating new UARTs in 2023 that
are NOT 8250-based"? Why do they want to constantly reinvent the wheel?

thanks,

greg k-h