Adds support for set-speed on the OMAP24xx I2C Adapter.
Changes to omap24_i2c_write(...) for polling ARDY Bit from IRQ-Status.
Otherwise on a subsequent call the transfer of last byte from the
predecessor is aborted and therefore lost. For exmaple when
i2c_write(...) is followed by a i2c_setspeed(...) (which has to
deactivate and activate master for changing psc,...).
Minor cosmetical changes.
Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
Cc: Heiko Schocher <hs@denx.de>
Make sure the I2C write queue is empty before leaving the mxs_i2c_write().
If we start and I2C write and only wait for ACK, the MXS I2C IP block may
enter next operation while still processing the write aftermath internally.
This will in turn disrupt one or more subsequent transfer(s).
A testcase for this issue is as such. This testcase is also interesting because
the first I2C_WRITE which becomes disruptive happens in the 'i2c read' command.
The 'i2c read' command first uses I2C_WRITE to send I2C address of the chip and
then uses I2C_READ to read data from the chip. After this command completes, the
'i2c probe' will use sequence of I2C_WRITE commands to probe the I2C bus. The
problem is that the first I2C_WRITE disrupted the I2C IP block operation and
this sideeffect propagates all the way to this next I2C_WRITE used by the 'i2c
probe' call. The result is the 'i2c probe' receives an ACK on I2C address 0x00,
even if this ACK was owned by the previous I2C_WRITE operation. Note that the
'i2c read' command must read from a valid I2C chip address.
Wrong:
> i2c probe
Valid chip addresses: 50 51
> i2c read 0x50 0x0.2 0x10 0x42000000
> i2c probe
Valid chip addresses: 00 50 51
With this patch
> i2c probe
Valid chip addresses: 50 51
> i2c read 0x50 0x0.2 0x10 0x42000000
> i2c probe
Valid chip addresses: 50 51
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Enhance the DesignWare I2C driver to support address length more
than 1 byte. This enhancement is required as some I2C slave
device such as EEPROM chip might have 16 bit address byte.
Signed-off-by: Chin Liang See <clsee@altera.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Tom Rini <trini@ti.com>
cc: Armando Visconti <armando.visconti@st.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Heiko Schocher <hs@denx.de>
The ADI twi peripheral is not binding to Blackfin processor only.
Access i2c registers by standard io functions.
Fix coding style.
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Fixed bug with alen == 0 in 'i2c_write', 'i2c_read'
Further minor corrections:
- Write 'address' register before 'data' register.
- Write 'transfer_size' register before 'address' register.
Signed-off-by: Michael Burr <michael.burr@logicpd.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
In Kbuild, every makefile must have non-empty obj- or obj-y.
Otherwise, built-in.o will not be created and the link stage
will fail.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
There is a strange comment in fit_image_load().
This function can be used for loading Kernel Image, FDT
as well as ramdisk.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
If the whole code is surrounded by #ifdef(CONFIG_ ) .. #endif,
it should be moved to Makefile.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
- When CONFIG_DISPLAY_CPUINFO is not enabled,
print_cpuinfo() should be defined as an empty function
in a header, include/common.h
- Remove #ifdef CONFIG_DISPLAY_CPUINFO .. #endif
from caller, common/board_f.c and arch/arm/lib/board.c
- Remove redundant prototypes in arch/arm/lib/board.c,
arch/arm/include/asm/arch-am33x/sys_proto.h and
board/nokia/rx51/rx51.h, keeping the one in include/common.h
- Add #ifdef CONFIG_DISPLAY_CPUINFO to the func definition
where it is missing
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
CONFIG_SYS_GBL_DATA_SIZE is not used any more.
The size of struct "global_data" is automatically calculated
by asm-offsets. (See lib/asm-offsets.c)
GENERATED_GBL_DATA_SIZE should be used instead of
CONFIG_SYS_GBL_DATA_SIZE.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
It is convenient to have all device trees on the same SoC compiled.
It allows for later easy repackaging without the need to re-run
the make file.
- Build device trees with the same SoC under arch/$(ARCH)/dts
- Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or
DEVICE_TREE=... to dts/dt.dtb
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Unlike Linux Kernel, U-Boot historically had *.dts files under
board/$(VENDOR)/dts/ and *.dtsi files under arch/$(ARCH)/dts/.
I think arch/$(ARCH)/dts dicretory is a better location
to store both *.dts and *.dtsi files.
For example, before this commit, board/xilinx/dts directory
had both Microblaze dts (microblaze-generic.dts) and
ARM dts (zynq-*.dts), which are totally unrelated.
This commit moves *.dts to arch/$(ARCH)/dts/ directories,
allowing us to describe nicely mutiple DTBs generation in the next commit.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Useful rules in scripts/Makefile.lib allows us to easily
generate a device tree blob and wrap it in assembly code.
We do not need to parse a linker script to get output format and arch.
This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
- Delete fs.xml from DOCBOOKS to fix an error.
Commit e3ff797c added fs.xml to DOCBOOKS
but missed to add doc/DocBook/fs.tmpl.
- Fix the location of include guard in include/linker_lists.h.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reported-by: Abraham Varricatt <abraham.varricatt@vvdntech.com>
Acked-by: Simon Glass <sjg@chromium.org>
tools/kernel-doc/docproc.c and tools/kernel-doc/kernel-doc are
files imported from Linux Kernel.
They originally resided under scripts/ directory in Linux Kernel.
This commit moves them to the original location.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
fw_printenv is a program which mostly runs on the target Linux.
Before switching to Kbuild, we needed to set HOSTCC at the
command line like this:
make HOSTCC=<your CC cross-compiler> env
Going forward we can cross compile it by specifying CROSS_COMPILE:
make CROSS_COMPILE=<your cross-compiler prefix> env
This looks more natural.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
Without this workaround, you will see a lot of ".*.su" files
at the top directory after building with a compiler
which supports "-fstack-usage" option.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
We had switched to Kbuild, so we do not need to
delete sandburst board files at every build.
U-Boot conventional build system did not check the
update of command line option, -DBUILDUSER.
Kbuild can handle it nicely and re-builds object files
when command line options are changed.
(The file ".*.cmd" stores the information how the file
was generated at the previous build.)
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
For out-of-tree build
- Check if the source tree is clean
- Create a Makefile in the output directory
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit fixes two problems:
[1] We could not do board configuration and "make all"
in one command line.
For example, the following did not work as we expect:
$ make sandbox_config all
Configuring for sandbox board...
make: Nothing to be done for `all'.
[2] mixed-target build did not work with -j option
For example, the following did not work:
$ make -j8 sandbox_config u-boot
Makefile:481: *** "System not configured - see README". Stop.
make: *** [u-boot] Error 2
make: *** Waiting for unfinished jobs....
Configuring for sandbox board...
Going forward, we can do
$ make -j8 sandbox_config all
This is the same as
$ make sandbox_config
$ make -j8
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit refactors cleaning targets such as
clean, clobber, mrpropper, distclean
with scripts/Makefile.clean.
By using scripts/Makefile.clean, we can recursively descend
into subdirectories and delete generated files there.
We do not need add a big list of generated files
to the "clean" target.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
$(MTD_VERSION) is used in tools/env/Makefile
If you specify a variable at a command line like:
$ make MTD_VERSION=old env
or specify it thru an envrionment variable like:
$ export MTD_VERSION=old
$ make env
it is inherited to the sub-make too.
We do not need to pass it from the top Makefile explicitely.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit refactors rules of directory descending
and defines u-boot-dirs and u-boot-all-dirs.
(We will need u-boot-all-dirs when using
scripts/Makefile.clean)
Additionally, rename LIBS-y to libs-y.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit changes the top Makefile to handle various targets
nicely.
Make targets are divided into four categories:
- mixed-targets
We can call a configuration target and build targets
at one command line like follows:
$ make <board_name>_config u-boot
They are handled one by one.
- config targets
<board_name>_config
- no-dot-config-targets
Targets we can run without board configuration such as
clean, mrproper, distclean, TAGS, %docs, etc.
- build targets
The other target which need board configuration.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Before this commit, "make tidy" did
"make clean" + delete "*.depend*" files.
But, we do not have "*.depend*" files any more,
which means "make tidy" is the same as "make clean".
This commit removes the redandant target "tidy".
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Before this commit, {spl,tpl}-autoconf.mk was always generated
at the top Makefile even if SPL(TPL) build was not selected.
This commit moves the build rule of {spl,tpl}-autoconf.mk
from the top Makefile to spl/Makefile.
It prevents unnecessary {spl,tpl}-autoconf.mk from being
generated.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit changes the location of include directives
of board configuration files.
The purpose of this change is:
- Slim down $(TOPDIR)/config.mk
- Prevent $(TOPDIR)/Makefile from including the same
configuration file twice
- Do not include include/config.mk multiple times
because ARCH, CPU, BOARD, VENDOR, SOC are exported
Before this commit:
- include/autoconf.mk was included from $(TOPDIR)/Makefile
and $(TOPDIR)/config.mk
(This means $(TOPDIR)/Makefile included include/autoconf.mk twice)
- include/{spl,tpl}-autoconf.mk was included from $(TOPDIR)/config.mk
- include/config.mk was included from $(TOPDIR)/Makefile
and $(TOPDIR)/config.mk
(This means $(TOPDIR)/Makefile included include/config.mk twice)
After this commit:
- include/autoconf.mk is included from $(TOPDIR)/Makefile
and $(TOPDIR)/scripts/Makefile.build
- include/{spl,tpl}-autoconf.mk is included from $(TOPDIR)/spl/Makefile
and $(TOPDIR)/scripts/Makefile.build
- include/config.mk is included from $(TOPDIR)/config.mk and
$(TOPDIR)/spl/Makefile
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
We can get Kbuild-ish log style like this:
GEN include/autoconf.mk
GEN include/autoconf.mk.dep
We do not need XECHO any more.
And also change checkstack target like Linux Kernel.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Now we are ready to switch over to real Kbuild.
This commit disables temporary scripts:
scripts/{Makefile.build.tmp, Makefile.host.tmp}
and enables real Kbuild scripts:
scripts/{Makefile.build,Makefile.host,Makefile.lib}.
This switch is triggered by the line in scripts/Kbuild.include
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
+build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
We need to adjust some build scripts for U-Boot.
But smaller amount of modification is preferable.
Additionally, we need to fix compiler flags which are
locally added or removed.
In Kbuild, it is not allowed to change CFLAGS locally.
Instead, ccflags-y, asflags-y, cppflags-y,
CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
are prepared for that purpose.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
This commit imports build scripts from Linux Kernel v3.13
as they are.
I know they include some trailing spaces
but I am intentionally keeping them untouched.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Some build scripts including scripts/Makefile.build
will be imported from Linux Kernel in the next commit.
We need to adjust them for U-Boot in the following commits.
To make it easier for reviewers to track the modification,
this commit renames scripts/Makefile.build to
scripts/Makefile.build.tmp beforehand.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
We are going to switch over to Kbuild in upcoming commits.
Each makefile must have non-empty obj- or obj-y
to generate built-in.o on Kbuild.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit changes the working directory
where the build process occurs.
Before this commit, build process occurred under the source
tree for both in-tree and out-of-tree build.
That's why we needed to add $(obj) prefix to all generated
files in makefiles like follows:
$(obj)u-boot.bin: $(obj)u-boot
Here, $(obj) is empty for in-tree build, whereas it points
to the output directory for out-of-tree build.
And our old build system changes the current working directory
with "make -C <sub-dir>" syntax when descending into the
sub-directories.
On the other hand, Kbuild uses a different idea
to handle out-of-tree build and directory descending.
The build process of Kbuild always occurs under the output tree.
When "O=dir/to/store/output/files" is given, the build system
changes the current working directory to that directory and
restarts the make.
Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>"
syntax for descending into sub-directories.
(We can write it like "make $(obj)=<sub-dir>" with a shorthand.)
This means the current working directory is always the top
of the output directory.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
Some flags are used for SPL (and TPL) build only.
This commit moves them from config.mk to spl/Makefile.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit merges commonly-used header include paths
to UBOOTINCLUDE and NOSTDINC_FLAGS variables, which are placed
at the top Makefile.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
