[U-Boot] [PATCH v2] serial, ns16550: bugfix: ns16550 fifo not enabled

[Tom Rini]

On Wed, Jan 18, 2017 at 08:05:49AM +0100, Heiko Schocher wrote:

> commit: 65f83802b7a5b "serial: 16550: Add getfcr accessor"
> breaks u-boot commandline working with long commands
> sending to the board.
> 
> Since the above patch, you have to setup the fcr register.
> 
> For board/archs which enable OF_PLATDATA, the new field
> fcr in struct ns16550_platdata is not filled with a
> default value ...
> 
> This leads in not setting up the uarts fifo, which ends
> in problems, when you send long commands to u-boots
> commandline.
> 
> Detected this issue with automated tbot tests on am335x
> based shc board.
> 
> The error does not popup, if you type commands. You need
> to copy&paste a long command to u-boots commandshell
> (or send a long command with tbot)
> 
> Possible boards/plattforms with problems:
> ./arch/arm/cpu/arm926ejs/lpc32xx/devices.c
> ./arch/arm/mach-tegra/board.c
> ./board/overo/overo.c
> ./board/quipos/cairo/cairo.c
> ./board/logicpd/omap3som/omap3logic.c
> ./board/logicpd/zoom1/zoom1.c
> ./board/timll/devkit8000/devkit8000.c
> ./board/lg/sniper/sniper.c
> ./board/ti/beagle/beagle.c
> ./drivers/serial/serial_rockchip.c
> 
> Signed-off-by: Heiko Schocher <hs at denx.de>
> Signed-off-by: Ladislav Michl <ladis at linux-mips.org>

Reviewed-by: Tom Rini <trini at konsulko.com>

-- 
Tom
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