[U-Boot] [PATCH v4 14/18] serial: 16550: allow the driver to support MediaTek serial

[Ryder Lee <ryder.lee@mediatek.com>]

On Tue, 2018-11-13 at 11:53 -0800, Simon Glass wrote:
> Hi Ryder,
> 
> On 6 November 2018 at 01:47, Ryder Lee <ryder.lee@mediatek.com> wrote:
> > This patch adds an extra operation in ns16550.c to suuport MediaTek
> > SoCs as we have a highspeed register which influences the calcualtion
> > of the divisor.
> >
> > Note that we don't support the baudrate greater than 115200 currently.
> >
> > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> > Tested-by: Matthias Brugger <matthias.bgg@gmail.com>
> > Reviewed-by: Simon Glass <sjg@chromium.org>
> > ---
> > Changes since v4: None
> >
> > @Simon
> > We have tried the compatible string, but it made the ns16550 driver more complicated.
> > To use the compatible string we have to add a new field in ns16550_platdata, and change
> > the flow of ns16550_serial_probe().
> >
> > Moreover, it's totally useless for debug uart. At present using a macro is the easiest way here.
> >
> > What do you think?
> > ---
> >  drivers/serial/ns16550.c | 10 ++++++++++
> >  1 file changed, 10 insertions(+)
> 
> Please see my reply to the other thread. We should not have
> arch-specific code in generic drivers.
> 
> Sorry for not replying earlier on that.
> 

OK. 

BTW, can you (or Tom) please take the other patches through your tree? 

Ryder