- LPDDR4 manual de-rate workaround set to Option 2 for 4 GiB
  and 2 GiB memory variants.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- If total memory amount is 3 GiB or less, PHYS_SDRAM_2 memory
  range is not used. Enable setup of memory range only if
  PHYS_SDRAM_2 is defined.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- When video_off ist set set to 'yes', some initialization routines in
  video_link driver are not executed during u-boot startup sequence.
  As a consequence, linux DP support will fail.
  Set 'video_off=no' to fix this.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Move 'boot_scripts' definition _behind_ the BOOTENV, otherwise
  this will overwrite 'boot_scripts' variable with its own definition.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

Detection of HW variant before iomux fixup for L120 failed. As a result
iomux fixup is skipped. Fix this.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- ramdisk_addr_r is required by distroboot spec.
- pxefile_addr_r is required by distroboot spec.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- add eMMC boot description.
- add bootloader update package description.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- There are some boot messages during DDR and MMC initialization which
  are superfluous for normal boot. Convert them to debug messages.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Remove 'legacy_boot' from bootcmd and clean up related boot scripts
  in default environment.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Add 'vsync-active' and 'hsync-active' properites to make sure that
  polarity of the SYNC signals can be reflected in dtb.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Display configuration is set up in device tree now.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Resolution 1920x1080 @60Hz seems to work stable on tested HDMI
  displays.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- Enable CONFIG_DM_VIDEO instead of CONFIG_VIDEO.
- Remove SPLASH_SCREEN as some display resolutions cannot be configured
  properly for HDMI displays.
- Enable CMD_BMP to allow for displaying graphics on HDMI screen.

Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>

- 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>