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* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-18/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* drivers/twserial: Add protocol driver for "three wire serial" interface.Detlev Zundel2009-03-30-0/+111
This pretty unintelligent interface is used on some RTC chips. Signed-off-by: Detlev Zundel <dzu@denx.de>