mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-14 07:06:19 +09:00
c24853644d
As documented in doc/I2C_Edge_Conditions, adding a board specific deblocking mechanism via CFG_I2C_INIT_BOARD for the mgcoge and mgsuvd board. This code was originally written by Keymile in association with Anatech and Atmel in 1998. The Code toggels the SCL until the SCA line goes to HIGH (max. 16 times). And after this, a start condition is sent. This is another approach to deblock the I2C Bus. The soft I2C driver actually sends 9 clocks with SDA High, and then a stop at the end, to deblock the I2C Bus. Maybe we should use the approach from Keymile as the new standard? Signed-off-by: Heiko Schocher <hs@denx.de>
48 lines
1.4 KiB
Makefile
48 lines
1.4 KiB
Makefile
#
|
|
# (C) Copyright 2007
|
|
# Heiko Schocher, DENX Software Engineering, hs@denx.de.
|
|
#
|
|
# See file CREDITS for list of people who contributed to this
|
|
# project.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License as
|
|
# published by the Free Software Foundation; either version 2 of
|
|
# the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
# MA 02111-1307 USA
|
|
#
|
|
|
|
include $(TOPDIR)/config.mk
|
|
ifneq ($(OBJTREE),$(SRCTREE))
|
|
$(shell mkdir -p $(obj)../common)
|
|
endif
|
|
|
|
LIB = $(obj)lib$(BOARD).a
|
|
|
|
COBJS = $(BOARD).o ../common/common.o
|
|
|
|
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
|
|
OBJS := $(addprefix $(obj),$(COBJS))
|
|
SOBJS := $(addprefix $(obj),$(SOBJS))
|
|
|
|
$(LIB): $(obj).depend $(OBJS)
|
|
$(AR) $(ARFLAGS) $@ $(OBJS)
|
|
|
|
#########################################################################
|
|
|
|
# defines $(obj).depend target
|
|
include $(SRCTREE)/rules.mk
|
|
|
|
sinclude $(obj).depend
|
|
|
|
#########################################################################
|