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a3db78d887
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3 Commits

Author SHA1 Message Date
Stefan Agner
a3db78d887 arm: vf610: lpuart: fix status register handling 
The status register 1 (S1) is not writeable, hence we should not
write it. In order to clear the RDRF flag we only need to read
the data register.

Also, when stressing U-Boot a lot with serial input, an overflow can
occur which asserts the S1_OR flag (while not asserting the S1_RDRF
flag). To clear this flag we again just need to read the data
register, hence add this flag to the abort conditions for the while
loop.

Insert a compiler barrier to make sure reading the data register
gets executed after reading the status register.

Signed-off-by: Stefan Agner <stefan@agner.ch>
 2014-09-09 16:52:44 +02:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files 
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
 2013-07-24 09:44:38 -04:00
Alison Wang
427eba706c arm: vf610: Add uart support for Vybrid VF610 
This patch adds lpuart support for Vybrid VF610 platform.

Signed-off-by: TsiChung Liew <tsicliew@gmail.com>
Signed-off-by: Alison Wang <b18965@freescale.com>
 2013-06-03 10:56:53 +02:00