[PATCH] dm: serial: introduce puts hook

[Peng Fan]

Hi Simon,

> Subject: Re: [PATCH] dm: serial: introduce puts hook
> 
> Hi Peng,
> 
> On Sun, 3 May 2020 at 06:42, Peng Fan <peng.fan at nxp.com> wrote:
> >
> > Introduce puts hook for dm serial driver.
> >
> > Signed-off-by: Peng Fan <peng.fan at nxp.com>
> > ---
> >  drivers/serial/serial-uclass.c | 13 +++++++++++--
> >  include/serial.h               |  8 ++++++++
> >  2 files changed, 19 insertions(+), 2 deletions(-)
> 
> I'm just wondering why we need this? Isn't serial_putc() enough?

This is to let u-boot could run in a XEN hypervisor DomU virtual machine.
It is low efficiently if each time, we use putc to let xen dom0 print uboot
log.

We could pass a string, not a char to improve performance.

Thanks,
Peng.

> 
> Regards,
> Simon