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See commit 3473c2e3e88f4a2046a24f164d7d67ad5db27b1e
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
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This cleans up the code without changing the functionality.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
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Using the RAM size on Colibri iMX6 might fail if the DCD is not yet
updated to a 64-bit DDR bus on the Colibri iMX6DL.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
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Update do_patch_ddr_size() to accommodate our new eMMC layout (e.g.
switch to primary eMMC boot area partition for patching).
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Move the U-Boot environment and config block to the end of the first
eMMC (hardware) boot area partition.
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Fix various comment style, indentation and spelling issues in our
Apalis/Colibri iMX6 board files.
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Return success/failure depending whether config block loading
succeeded or failed (e.g. if written in different ECC format or
not available at all).
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If the DCU framebuffer is not configured, the board file still
tries to call fsl_dcu_fixedfb_setup, which leads to a compile
issue. Call fsl_dcu_fixedfb_setup only if DCU is enabled.
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Set DDR property fixup also in (future) version 2.x revisions.
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Add iomux definitions for DSPI second instance.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
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Most of the drivers available for Vybrid are not yet converted
to OF model to use device tree model, only few drivers
like SPI and GPIO drivers use device trees.
Add separate defconfig for who needs to use device tree model.
Later this can be integrated to single defconfig.
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
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Enable the display driver on Apalis T30. Unfortunately the PWM pin
muxing wasn't any good neither which made that display stay dark.
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On popular request enable the display driver on Colibri T30. A few
notes about some things encountered during porting: While analogue VGA
(e.g. via the on-carrier RAMDAC) worked just fine from the beginning
the EDT display flickered like crazy which turned out to be a pin
muxing issue. Unfortunately the PWM pin muxing wasn't any good neither
which made that display stay dark. Enjoy.
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On popular request make the display driver from T20 work on T30 as
well. Turned out to be quite straight forward. However a few notes
about some things encountered during porting: Of course the T30 device
tree was completely missing host1x as well as PWM support but it turns
out this can simply be copied from T20. The only trouble compiling the
Tegra video driver for T30 had to do with some hard-coded PWM pin
muxing for T20 which is quite ugly anyway. On T30 this gets handled by
a board specific complete pin muxing table. The older Chromium U-Boot
2011.06 which to my knowledge was the only prior attempt at enabling a
display driver for T30 for whatever reason got some clocking stuff
mixed up. Turns out at least for a single display controller T20 and
T30 can be clocked quite similar. Enjoy.
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Use the correct I2C instance for the I2C going to SODIMM_194/196.
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use Apalis GPIO1 to switch on VPGM
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commit 2da77958e96151295e72f8f85aee352d0b4010fe added a configuration option
to include commands used during production.
Fixing the use of the CONFIG macro.
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Some firmwares running on the secondary core rely on UART pins
muxed at start time. Mux the Vybrid UART2 (which maps to Colibri
UART_B) at startup.
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Fixup the device-tree with the property fsl,has-cke-reset-pulls
which annotates that the board has pull-ups/downs which are required
to put the memory into self-refresh mode. The self-refresh mode in
turn is a requirement to put the SoC into deep sleep mode LPSTOP.
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Use device-tree fixup to communicate the MTD partitions to the
kernel. U-Boot's mtdparts environment variable will be used as
partition source for the device-tree based partition table too.
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Do not configure all interrupts to the primary core by default since
newer Linux versions configure the MSCM interrupt router correctly
by themself. This also prevents warnings due to already routed
interrupts when booting Linux on the secondary Cortex-M4 CPU.
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In order to use the gpio commandline feature of U-Boot the pins
one wants to control must be muxed to GPIO.
Do that for Apalis pins GPIO[1:8] and for WAKE1_MICO.
This feature can be used as follows:
e.g. set GPIO1 to 1:
Apalis iMX6 # gpio set 36
gpio: pin 36 (gpio 36) value is 1
e.g. read the state of GPIO8:
Apalis iMX6 # gpio input 6
gpio: pin 6 (gpio 6) value is 1
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In order to use the gpio commandline feature of U-Boot the pins
one wants to control must be muxed to GPIO.
Do that for all unused pins which in the default kernel device tree also gets
muxed to gpio for userspace use.
This feature can be used as follows:
e.g. change the LCD brightness signal from 0V to 3.3V:
Colibri iMX6 # gpio set 41
gpio: pin 41 (gpio 41) value is 1
e.g. read the state of gpio 111:
Colibri iMX6 # gpio input 111
gpio: pin 111 (gpio 111) value is 1
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Out of reset EMI_ADDR22 is output and connected to GPIO01.
As we want to use GPIO01 as an output for backlight control
mux EMI_ADDR22 to a GPIO which by default is input.
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Add an alias for the ESDHC0 which provides the standard MMC connection
on Colibri iMX6.
Add an alias for the ESDHC0/1 which provides the standard MMC/SD connection
on Apalis iMX6.
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Fix build of configurations without the Toradex config block. Also
move away from the ifdefery through the file, but create a global
ifdef which distingush between the two variants on a global level.
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The USB product ID's for the Colibri/Apalis family of Toradex can
be calculated by using the Toradex product ID (as provided by the
config block) plus a fixed offset of 0x4000.
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Set board revision and Toradex product ID as device tree property.
This transfers the Toradex configblock information to Linux user-
space, where it can be read conviniently through the proc file
system files:
- /proc/device-tree/serial-number
- /proc/device-tree/toradex,board-rev
- /proc/device-tree/toradex,product-id
In case the Toradex config block is missing or corrupted, the
device tree properties won't be created by the boot loader and
hence those file won't exist in that case.
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Use ft_system_setup to set Toradex specific device-tree properties.
At first, this is only the serial-number, which is using a property
which is about to be standardized in the binding documentation of
the Linux kernel.
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Move setting of environment variables to common code. This prepares
for further enhancements which will enhance the device tree with
module specific information from the configblock.
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CONFIG_TRDX_CMD_IMX_MFGR in menu 'ARM architecture'
While at it remove unused include g_dnl.h
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In U-Boot use the following display outputs a:
- Test the panel environment variable and if set use it
- Use HDMI if connected
- Use parallel output otherwise configured for VGA 640x480
The following strings can be set for the panel variable:
HDMI vga-rgb wvga-rgb
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Swap the order of the Toradex factory configuration block location in
respect to the U-Boot environment. This to again be in-line with
mainline.
Move the Toradex factory configuration block to a 3 MB offset.
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Rename the serial loader boot mode to "serial". Also add an alias
for the ESDHC1 controller, which provides the standard MMC connection
for the Colibri SO-DIMM default pinout.
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Some functionality is repetitve accross the boards. This creates
a common place for U-Boot functions which need to be implemented
similarly for all Toradex modules.
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Add IOMUX for the pad used as USB pen. This needs to be driven low for
the Iris and Viola boards where it is pulled up high by default. This is
required for the USB host functionality to work on these boards. Use the
board specific weak initialisation function, to drive the pin low which
would be called on "usb start".
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
[use switch statement to make port selection more obvious]
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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use
make colibri_imx6_defconfig
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Use for the industrial temperature range rated modules:
make apalis_imx6_it_defconfig
Use for the commercial temperature range rated modules:
make apalis_imx6_defconfig
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Fix comment in write_trdx_cfg_block_to_nand to actually indicate it
writing the config block to NAND.
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Add missing new line in tegra_pcie_board_init.
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Migrate Colibri T20 to U-Boot 2015.04.
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Add LCD display support defaulting to VESA VGA resolution. Different
resolutions configurable via device-tree.
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Use the proposed format to transport the device's serial number
to the kernel:
http://www.spinics.net/lists/devicetree/msg76756.html
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Add GPIO's typically required for display handling such as GPIO 45
(SO-DIMM 71, BL_ON) or GPIO 22 (SO-DIMM 59, PWM<A> for backlight).
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Add GPIO platform data which will be
used when device tree control was
not enabled
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
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Inorder to use the pins as GPIO, apart from setting the alt-function,
pinmuxing need to be done, this patch adds pinmux entries of
few GPIOs.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
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Add environment variables for default framebuffer support using a
default VGA mode. Also remove memargs, since we use memory size to
reserve the framebuffer which does not get overwritten by the
Linux kernel. See related commit: 1d7518ec3a ("video: dcu: fix
framebuffer to the end of memory")
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Fix the framebuffer location to the very end of the available memory.
This allows to remove the area from available memory for the kernel,
which in turn allows to display the splash screen through the while
Linux kernel boot process.
Ideas has been taken from the sunxi display driver, e.g.
20779ec3a5 ("sunxi: video: Dynamically reserve framebuffer memory")
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