On Seaboard the UART and SPI interfere with each other. This causes the UART
to receive spurious zero bytes after SPI transactions and also means that
SPI can corrupt a few output characters when it starts up if they are still
in the UART buffer.
This updates the board to use the SPI/UART switch to avoid the problem.
For now this feature is turned off since it needs changes to the NS16550
UART to operate.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The Tegra2 Seaboard has the unfortunate feature that SPI and the console
UART are multiplexed on the same pins. We need to switch between one
and the other during SPI and console activity.
This new file implements a switch and keeps track of which peripheral
owns the pins. It also flips over the controlling GPIO as needed
Since we are adding a second file to board/nvidia/common, we create
a proper Makefile there and remove the direct board.o include from
board/nvidia/seaboard/Makefile
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
UART selection is done with a lot of #ifdefs. This cleans things up
a little.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Since Ventana is derived from Seaboard and requires seaboard.c to build,
make sure board/nvidia/seaboard is created in the build tree.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Wolfgang Denk <wd@denx.de>
Since low-level init is skipped, the instruction cache is never enabled on
Tegra2. This explicitly calls this initialization as soon as the A9 is
initialized.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
We want to move away from a special Tegra2 start-up, and just use
arch_cpu_init() instead. However, if we run board_init_f() from boot
we need to build it for ARMv4T, since the Tegra's AVP start-up CPU
does not support ARMv7.
The effect of this is to do the AVP init earlier, and in
arch_cpu_init(), rather that board_early_init_f().
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
... rather than open-coding the register accesses.
However, gpio_request() typically stores the "label" parameter in a global
data structure. This causes problems when called from gpio_config_uart(),
since the code is running before relocation. To solve this, pass a NULL
string to gpio_request(), and modify gpio_request() not to touch the string
if it's NULL.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Ventana is a board which is very similar to Seaboard. Support it by
re-using board/nvidia/seaboard/seaboard.c with minor run-time conditionals.
v5: Makefile: Use cmd_link_o_target, remove unused clean/distclean targets.
v6: Make gpio_config_uart_seaboard() static.
v7: Add MAINTAINERS entry for Ventana. Tom Warren doesn't have Ventana, so
he asked me to add myself for this board.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Pass the GPIO numbers for power and card detect to tegra2_mmc_init(), and
modify that function to perform all required GPIO initialization. This
removes the need for board files to perform these operations.
Move board_mmc_getcd() into tegra2_mmc.c now that the driver knows which
GPIOs to use.
Update affected call-sites in seaboard.c and harmony.c. Note that this
change should make all SD ports work on Harmony, since the required GPIO
setup is now being performed.
v4: Fix prototype of tegra2_mmc_init() in board.h to match driver change.
Remove prototype of gpio_config_mmc() from board.h
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: Andy Fleming <afleming@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
For Seaboard, this is mostly a cut/paste of board_mmc_init() and
pin_mux_mmc() into seaboard.c; pin_mux_mmc() was modified to add some
missing pinmux_tristate_disable calls for the GPIOs.
For Harmony, those functions were modified to configure SDMMC2 (index 2)
instead of SDMMC3 (index 1), since that's what is present on the board.
However, harmony.c is still missing the required GPIO setup, so neither
port is likely to function correctly yet. This will be fixed in the next
change.
v4: Include board.h to prototype tegra2_mmc_init().
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This centralizes knowledge of MMC clocking into the MMC driver. This also
removes clock setup from the board files, which will simplify later changes
that modify the Harmony board to support the correct set of MMC controllers.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: Andy Fleming <afleming@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
This adds the required GPIO and pinmux configuration to make eMMC / SD work
on Seaboard.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
This adds support for changing pinmux functions of pin groups. This is done
by defining a PMUX_FUNC_... enum which can be used to select the function for
each group using pinmux_set_func(). It is also possible to enable
pullup/pulldown, and the existing tristate functionality is retained.
Also provided is a means of configuring a list of pingroups by providing a
configuration table to pinmux_config_table().
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
The pin groupings are better named PINGRP, since on Tegra2 they refer to
multiple pins.
Sorry about this, but better to get it right now when there is only a small
amount of code affected.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
This adds most of the clock functions required by board and driver code:
-query and adjust peripheral clocks
-query and adjust PLLs
-reset and enable control
These functions are plumbed in as required.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
This removes clock_init() and pinmux_init() which are names better suited
to those respective modules. By moving board_init_f() to the bottom of the
file we can remove the need for so many functions in the board.h header file.
The only clock/pinmux/gpio init we need to do prior to relocation is
for the UART.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
Rename CLOCK_PLL_ID to CLOCK_ID which takes account of the fact that the
code now deals with both PLL clocks and source clocks.
This also tidied up the assert() to match the one sent upstream, and fixes
an error in the PWM id.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
Seems people fixed their files to use libfoo.o, but didn't actually
update the creation targets to use $(cmd_link_o_target). Update the
rest of the Makefile's found with grep.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Simon Glass <sjg@chromium.org>
The top level Makefile does not do any recursion into subdirs when
cleaning, so these clean/distclean targets in random arch/board dirs
never get used. Punt them all.
MAKEALL didn't report any errors related to this that I could see.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The out-of-tree build fails because the Makefiles in question depend on
source files of another directory but do not explicitly mkdir that
directory.
As a matter of fact, other Makefiles under board/*/ directory that refer
to source files under another directory explicitly call mkdir.
This patch adds explicit mkdir's to the Makefiles in question, and
verifies that out-of-tree build is working.
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
NVIDIA boards and Samsung SMDK6400 already use a local variant of
CONFIG_MACH_TYPE option.
Switch to use the new common code.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Simon Glass
Tom Warren
Thierry Reding
Stephen Warren
Tom Warren
Mike Frysinger
Che-liang Chiou
Igor Grinberg
Graeme Russ
Wolfgang Denk