[U-Boot] [U-Boot, 3/3] stm32: Change USART port to USART6 for stm32f746 discovery board

Tom Rini trini at konsulko.com
Thu Jul 21 21:39:38 CEST 2016


On Wed, Jul 20, 2016 at 11:59:32PM +0200, Vikas MANOCHA wrote:
> Hi Tom,
> 
> > -----Original Message-----
> > From: U-Boot [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Tom Rini
> > Sent: Saturday, July 16, 2016 6:51 AM
> > To: tnishinaga.dev at gmail.com
> > Cc: u-boot at lists.denx.de; gregkh at linuxfoundation.org
> > Subject: Re: [U-Boot] [U-Boot, 3/3] stm32: Change USART port to USART6 for
> > stm32f746 discovery board
> > 
> > On Fri, Jul 08, 2016 at 01:02:26AM +0900, tnishinaga.dev at gmail.com wrote:
> > 
> > > From: Toshifumi NISHINAGA <tnishinaga.dev at gmail.com>
> > >
> > > This change is to remove a halt at about 200KiB while sending a
> > > large(1MiB) binary to a micro controller using USART1.
> > > USART1 is connected to a PC via an on-board ST-Link debugger that also
> > > functions as a USB-Serial converter.
> > > However, it seems to loss some data occasionally.
> > > So I changed the serial port to USART6 and connected it to the PC
> > > using an FTDI USB-Serial cable, therefore the transmission was
> > > successfully completed.
> > >
> > > Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev at gmail.com>
> > 
> > Applied to u-boot/master, thanks!
> 
> There is no serial/usb connector on discovery board to use USART6 signals.
> With this patch, it is not possible to get discovery console without additional circuit. Please revert this patch.
> Also I did a quick check on transferring 2.6MB binary using usart1 without any issue.

Done, sorry about that.

-- 
Tom
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