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

Jisheng Zhang
2023-05-31T15:17:44Z

On Wed, May 31, 2023 at 03:34:02PM +0100, Greg Kroah-Hartman wrote:
> 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?

haha, to be honest, I dunno the reason either. For me, the HW has been there
and is linux capable, I want to mainline its support.