[U-Boot] Is FT232R chip supported in U-Boot?

[jonsmirl at gmail.com]

On Thu, Nov 10, 2011 at 8:15 AM, Mahavir Prasad <er.mahavir at gmail.com> wrote:
> Hello All,
>
> We have our new board and I am porting U-Boot on it. I am first trying to
> get U-Boot's console. FT232R is populated on the board and I need to use it
> for the showing the console.

If the ft232 is attached to the CPU's console serial port you don't
need to do anything to it (make sure it has power and it is wired
correctly) and it will work automatically assuming you program the
CPU's serial port to work. Just plug the USB end of the cable into a
PC and use a terminal emulation program.  You need to match up the
baud rates.

If it is attached the other direction - USB hooked to the CPU, then
you will need to use a JTAG until you can get the USB subsystem
running in u-boot.

Either way getting a JTAG going first will make like easier at the lowest level.



>
> I looked into u-boot/drivers/serial folder but could not find any reference
> to FT232R.
>
> Could you please let me know whether FT232R is already supported in U-Boot?
>
> Also, in case, I need to write the driver, I would like to confirm that I
> need to write following functions in my driver:
>
> serial_init, serial_setbrg, serial_puts, serial_putc, serial_tstc,
> serial_getc
>
> I also looked into the linux driver provided at
> http://www.ftdichip.com/Drivers/VCP.htm
>
> However, I felt that the linux driver's approach to the UART handling is
> quite different than that of U-Boot. Could you please comment on this?
>
> Regards,
> Mahavir
>
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>



-- 
Jon Smirl
jonsmirl at gmail.com