GitLab

- add 'board_phys_sdram_size' function to calculate the total amount of
  memory appropriately.
- set PHYS_SDRAM_SIZE to the maximum possible value of 0xC0000000 (3 GiB)
- remove 'PHYS_SDRAM_2_SIZE' from board config file.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Add support to test available memory.
- Add test configuration for 2 GiB variant.
- Use BRD_REV0 and BRD_REV1 signals to detect memory variant of the
  module. Currently, 2 GiB and 4 GiB memory variants are supported.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Current implementation requires that memory size is configured using
  PHYS_SDRAM and PHYS_SDRAM_2 settings depending on actual memory
  size in the board config file. As PHYS_SDRAM_2 memory area is not
  used if total memory size is < 3 GiB, cache and MMU setup would use
  wrong values when initialized. Thus, dynamic initialization of 4 GiB
  and 2 GiB modules is not possible with one single bootloader binary.
- Add support to determine actual memory size using the
  'board_phys_sdram_size' function and calculate size of DRAM1 and
  DRAM2 regions accordingly. Fix cache enable setup to use detected size
  of memory areas instead of fixed config values.
- Ensure that memory regions are set up properly even if OPTEE memory
  region splits DRAM1 into multiple regions.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Add BRD_REV[3:5] GPIOs to support memory variants and later board
  revisions.
- Add pitx_gpio_t struct for cleaner gpio init and request in
  'board_gpio_init' function.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Enable CONFIG_LOG in pitx-imx8m defconfig.
- CONFIG_LOG support available in emb_eep driver so far.
- Set pitx-imx8m log format to 'm' (=0x20): log message only.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- convert messages and warnings to appropriate log calls
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- GPIO5_IO08 and GPIO5_IO09 iomux settings for UART3 RTS/CTS lines on
  rev2 have been swapped erraneously. Fix this.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

Due to HW design errors in rev2, some signals must be reconfigured
to avoid malfunction or possible electrical damage.
- Setup UART3 RTS/CTS lines as GPIOs as polarity has been swapped on rev2
- Make sure to set GPIO1_IO12 (USB1_OTG_PWR) in input mode and remove usb0
  port from u-boot device tree to avoid conflicting drivers when external
  host is attached.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- add USB1_OTG_PWR configuration
- add USB1_OTG_OC configuration
- add USB1_OTG_ID configuration
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Due to an error in rev2 HW design, RTS/CTS of UART3 does not work. To
  prevent possible electrical damage, both lines are set up as GPIOs with
  appropriate settings. RTS/CTS flow control on UART3 is not available
  on rev2 modules.
- Add setup for UART3 RTS and CTS lines.
- Check hw revision and configure RTS/CTS as GPIO on rev2 modules.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- add setup for UART3 RTS and CTS lines.
- check hw revision and swap RTS and CTS lines for old rev2 modules.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- The IOMUX setting for pin ECSPI1_MISO__UART3_CTS_B is wrong as it
  writes 0 into the UART3_RTS_B_SELECT_INPUT register. This means
  that the UART3_RTS_B signal is assigned to ECSPI1_MISO pin instead
  of ECSPI1_SS0. Fix this.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- use the 'update_pitx/update.scr' script for bootloader updates in
  emmc boot partition 0.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- read brd_rev gpio lines to determine board hardware revision
- create human readable environment variable 'hw_rev'
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Current driver only allows to define a fixed timeout value in the
  board config file.
- Extend 'imx_watchdog_init' parameter list with timeout value as
  received by 'imx_wdt_start' function. Calculate timeout value and
  write appropriate value into WCR register.
- For legacy use, the fixed CONFIG_WATCHDOG_TIMEOUT_MSECS from board
  config is still evaluated.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

If a LVDS display is connected, but not powered,
the LVDS display pulls the I2C signals low,
when DSI_RST# is asserted.
Signed-off-by: Dmitry Petrov <dpetrov@dev.rtsoft.ru>

- Set the LED_2_SEL bits [11:8] in DP83867IR LED Configuration
  Register 1 to 0b1011 (link established, blink on activity) from
  default value 0b0001. Same settings are configured for GBE1 PHY
  when I210/I211 is activated in linux.
- This fixes KDP#81891 request for the pITX-iMX8M.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- guard u-boot execution using i.MX8 CPU watchdog
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

Dmitry Petrov authored Oct 02, 2020 and Thomas Schäfer committed Oct 06, 2020

- sync with EVK settings
- reorder to match Kconfig structure
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- During merge to imx_v2020.04_5.4.24_2.1.0 branch the '&usb_dwc3_1'
  node reference was duplicated in the pitx-imx8m device tree. As a
  result, USB port 1 support was broken. Fix this and remove superfluous
  usb_dwc3_1 reference.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Fix struct definitions from new u-boot
  Environment data structure were renamed in v2020.04. Fix environment
  env_entry structure definitions.
- Remove memory setup functions
  Memory setup functions 'dram_init', 'get_effective_memsize' and
  'dram_init_banksize' are defined within mach-imx specific memory
  driver and thus removed here.
- Fix some device node names
  Some device nodes are renamed in underlying dtsi files. Fix
  references to these nodes.
- Fix SPL build
  fix include files used
  fix PMIC configuration settings to allow build with PMIC support.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- variable name is 'scriptaddr' instead of 'script_addr'
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- enable BOOT_TARGET_DEVICES mmc0, mmc1, usb0 and dhcp
- add missing environment variables for distro_boot
- fix bootcmd
- legacy bootcmd settings still available and executed before
  distro_boot targets
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- move configs to pitx-imx8m_defconfig
- minor style fixes
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- There are other automatic environment variable available:
  arch=arm
  soc=imx8m
  soc_type=imx8mq
  cpu=armv8
  So, no additional 'core_variant' variable is necessary.

This reverts commit 480e495505ef9a03af3f2b509d9bf845470bac43.

Dmitry Petrov authored Jul 22, 2020 and Thomas Schäfer committed Sep 17, 2020

Toogle the TPM_PCI_RST# (GPIO3_IO2) line for 70ms.

- Enable ums (USB Mass Storage) support that allows to mount onboard
  mass storage devices like eMMC and SD card on external host machine.
  This can be a convenient method to install software on onboard devices.
- Remove configuration settings duplicated (and outdated) in pitx-imx8.h
  config file.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- This creates environment variable 'ver' that shows the U-Boot
  version the same way it is printed by the 'version' command.
- Note that module release string (e.g. PITX-IMX8M-R10) must be
  introduced to UBOOTRELEASE string by setting and pasting
  CONFIG_LOCALVERSION appropriately during build procedure, e.g.
  echo CONFIG_LOCALVERSION=\"-<release-tag>\" >>.config
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Use 'board_serial' environment variable to read correct serial number
  as stored in VPD area.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Normally, Kontron modules with VPD data stored on embedded KEU
  EEPROM set the 'serial#' environment variable to the value found
  in the 'Serial Number' entry of the SMBIOS block type 2.
- However, on some i.MX8 based modules, the NXP fastboot implementation
  sets 'serial#' in the 'fastboot_setup' function _before_ KEU VPD data
  EEPROM is read. As serial# is write once, it cannot be overridden by
  the value found in VPD data.
- So introduce the new 'board_serial' environment variable that to
  store the serial number from VPD data area. Board specific 'getSerNo'
  function must be adapted to read 'board_serial' from environment
  instead of 'serial#'.
- Keep also to setting the 'serial#' variable as before to be backward
  compatible and to have the 'serial#' variable still set in case that
  FASTBOOT might not have been configured in the bootloader.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Read i.MX cpu type using standard 'get_imx_type' functioin.
- Convert string to lowercase and set core variant appropriately.
- Remove blank characters from string as the core_variant variable
  could be used to select appropriate device tree before OS boot.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- detect CPU boot source and set 'bootsource' environment variable
  1: boot from eMMC
  2: boot from SD card
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>