[U-Boot] [PATCH 1/4 v2] serial: Add Zynq serial driver

[Joe Hershberger]

Hi Marek,

On Thu, Sep 13, 2012 at 9:01 AM, Marek Vasut <marex at denx.de> wrote:
> Dear Michal Simek,
>
>> On 09/13/2012 02:33 PM, Marek Vasut wrote:
>> > Dear Michal Simek,
>> >
>> >> On 09/13/2012 11:21 AM, Marek Vasut wrote:
>> >>> Dear Michal Simek,
>> >>>
>> >>>> The driver is used on Xilinx Zynq platform.
>> >>>>
>> >>>> Signed-off-by: Michal Simek <monstr at monstr.eu>
>> >>>>
>> >>>> ---
>> >>>> v2: Use Zynq name instead of Dragonfire and XPSS/XDFUART
>> >>>>
>> >>>>       Rename driver name
>> >>>>       Remove driver description
>> >>>>
>> >>>> ---
>> >>>>
>> >>>>    drivers/serial/Makefile      |    1 +
>> >>>>    drivers/serial/serial_zynq.c |  200
>> >>>>
>> >>>> ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 201
>> >>>> insertions(+), 0 deletions(-)
>> >>>>
>> >>>>    create mode 100644 drivers/serial/serial_zynq.c
>> >>>
>> >>> [...]
>> >>>
>> >>> It looks ok, but can you make it support CONFIG_SERIAL_MULTI right away
>> >>> please?
>> >>
>> >> Yes, it will add serial_multi in the next patch.
>> >> Can you give me your ACK or reviewed-by line? :-)
>> >
>> > Just squash them into one patch please.
>>
>> Done.
>
> Thanks ... my idea is to switch to serial_multi completely, then rework stdio,
> unify serial on top of it and clean up the whole subsystem. Thanks for helping!

I have a patch that I'll send soon that moves the "nulldev" driver to
the serial driver (if CONFIG_SERIAL_MULTI is defined) so that it is
possible to avoid serial init.  I had the problem that the serial port
on my Zynq product lives in the fabric instead of using the hard-core
ones.  This means that the FPGA neds to be configured first, but since
I'm using u-boot for that too, I need it to start as null and switch
to the fabric serial after the FPGA is configured.  Anyway, just more
support for supporting CONFIG_SERIAL_MULTI.

-Joe